Shadowing-Übung: How China Built a Dam So Big It Slowed Down Planet Earth - Englisch Sprechen Lernen mit Video
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One morning, NASA scientists were sipping their coffee when they spotted something bizarre on their screens.
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The entire Earth had slowed down.
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Was it aliens or an asteroid?
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Nope.
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The culprit was engineers in China.
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They built such a wild dam across the unruly Yangtze River,
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piling so much water in one spot that our planet tilted and slowed down like someone carrying a heavy grocery bag.
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How did engineers mess with Earth's settings?
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Let's rewind to the beginning.
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Long before concrete or electricity existed, this story began with Asia's longest waterway, the mighty Yangtze River.
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Stretching 6 ,300 kilometers from freezing
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Tibetan glaciers down to the sea, its fertile banks fed Chinese dynasties for millennia.
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Yet, this generous lifeline had a nasty temper.
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Every summer, monsoon rains transformed the river into a runaway monster that swallowed farms and wiped whole towns off the map.
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4 ,000 years ago, legendary rulers like
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Yu the Great spent their entire lives digging dirt channels just to calm the river down.
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Yet, the Yangtze always struck back harder.
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In 1931 alone, relentless storms pushed the river over its banks, drowning an area the size of England.
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Millions lost their homes overnight, proving that mud levees and sandbags were no match for nature's fury.
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Back in 1919, revolutionary leader
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Sun Yat -sen stared at a narrow stretch of steep canyons called the Three Gorges and pitched an audacious idea,
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plug that rocky bottleneck with a dam to stop floods and generate electricity.
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Decades later in the 1950s, Mao Zedong swam across the Yangtze himself and wrote poems about stone walls holding back clouds,
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yet wars and poverty kept the dream on paper.
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Engineers also had terrifying reasons to think twice before blocking
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China's biggest river.
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In 1975, a super typhoon slammed central
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China and burst a smaller Bangqiao Dam, sending a wall of water through villages and claiming over 100 ,000 lives.
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Critics warned that building a far larger reservoir on the main Yangtze could become an unthinkable trap if war,
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earthquakes, or bad math ever cracked it open.
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For 40 noisy years, geologists, ecologists, and politicians argued over blueprints while testing every cliff along the canyon.
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Finally, in 1992, China's parliament put the Three Gorges project to a vote,
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sparking a rare rebellion where nearly one -third of all delegates refused to say yes.
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Even with tempers flaring, the government approved the plan.
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And in 1994, 40 ,000 workers marched then to reshape geography.
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Right out of the gate, builders faced a comical physics headache.
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How do you pour wet concrete into the middle of a roaring river without watching it wash straight into the ocean.
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Since nobody could politely ask the Yangtze to take a weekend break, crews blasted an open bypass channel along one shore,
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forcing the river to detour around the main construction zone.
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Next came an around -the -clock battle of brute force.
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Until November 1997, fleets of dump trucks hurled house -sized granite boulders into the churning water,
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pinching the river shut between two temporary stone walls called cofferdams.
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Giant pumps then sucked the trapped lagoon completely dry allowing engineers
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and muddy boots to walk across an ancient riverbed
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that hadn't seen sunlight in millions of years on
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that bare granite floor rose an absolute beast of engineering a solid gravity dam stretching 2 .3 kilometers wide
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and standing 185 meters tall instead of curving like a thin arch braced against canyon cliffs
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this wall relies on sheer stubborn weight to stand its ground packing 28 million cubic meters of concrete
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and enough structural steel to build 63 Eiffel Towers.
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Stacking that much wet cement created a sneaky chemical trap.
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As concrete hardens, internal reactions heated up like an oven to 50 degrees Celsius.
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Left alone, the core would take decades to cool and shatter like a hot glass dunked in cold water.
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So engineers blasted crushed rock with icy air before mixing, then threaded miles of cold water pipe straight through the wall like an industrial fridge.
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Of course, China didn't spend over $30 billion just to build an oversized garden fence.
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The real magic hides deep inside the dam's hollow halls.
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Workers lowered 32 enormous Francis turbines into place, each weighing hundreds of tons and wide enough to swallow a city bus.
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When plunging river water slams into those curved steel blades, raw gravity turns directly into clean electricity.
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Spinning together at peak flow, those 32 generators crank out 22 ,500 megawatts,
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matching the muscle of 22 nuclear power plants running side by side.
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Ultra -high voltage cables carry that surge over 1 ,000 kilometers east to keep neon -lit megacities like
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Shanghai humming day and night, sparing the sky tens of millions of tons of smoky coal exhaust every single year.
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Blocking China's busiest shipping lane, however, created an awkward traffic jam.
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How do 10 ,000 ton cargo freighters climb over a concrete wall as tall as a 50 -story skyscraper?
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Engineers answered by blasting a double five -level lock system straight out of solid granite mountainsides.
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Ships sail into chamber after chamber as towering steel gates swing shut, and rising water floats them upstairs over the dam.
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Climbing all five water steps takes roughly four hours which felt painfully slow for passenger ferries and urgent deliveries
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so in 2016 engineers unveiled something straight out of an animated sci -fi movie
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the world's largest ship elevator vessels weighing up to 3 000 tons float into a water -filled steel basin
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and thick cables hoist boat crew and water 113 meters vertically in 40 minutes
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While ships rode elevators up front, closing the floodgates quietly drowned an entire world upstream.
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As water climbed to 175 meters above sea level, a narrow canyon morphed into a 600 -kilometer artificial lake.
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Slowly disappearing beneath the murky green surface were 13 full -size cities, 140 towns, 1 ,300 villages,
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fertile orange groves, and cliffside temples carved 2 ,000 years ago.
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Before the waves rolled in, nearly 1 .4 million citizens had to pack their lives into cardboard boxes, watch demolition crews flatten their childhood neighborhoods,
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and move into brand new concrete towns higher up the hills.
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Meanwhile, cleanup teams raced furiously to empty more than 1 ,600 old factories, mines, and landfills sitting on the valley floor,
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before rising water turned the reservoir into chemical soup.
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When the reservoir finally topped out, 39 billion tons of water sat suspended high above sea level,
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bringing us right back to those spilled coffees at NASA.
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By lifting so much weight away from Earth's core, China triggered the exact physics of a spinning figure skater opening their arms.
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Our planet's rotation slowed, lengthening every day by 0 .06 microseconds and nudging
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Earth's axis 2 centimeters.
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Down beneath China's feet, parking 39 billion tons of liquid over ancient rock fractures came with serious side effects.
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Thousands of small tremors rattled nearby fault lines, while soggy canyon cliffs began sliding into the water.
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At the same time, the wall traps millions of tons of fertile mud each year, starving downstream wetlands and pushing rare Yangtze wildlife,
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like the smiling finless porpoise dangerously close to vanishing.
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A few years ago, internet rumors exploded when a warped satellite picture went viral,
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making the straight dam look bent like a soft noodle ready to snap.
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Space agencies quickly explained it was just a glitchy photo -stitching error from a passing satellite, not bending concrete.
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Months later in 2020, record monsoon floods slammed the reservoir at 75 million liters per second, and the wall held firm.
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Today, wild climate swings test this giant from both extremes, forcing operators to hold back angry summer floods one year,
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then ration precious water during blistering droughts the next.
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Over a century after it started as a daydream on a map, the Three Gorges Dam stands as humanity's boldest gamble with Mother Nature.
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A structure big enough to power megacities, swallow ancient history, and literally slow down planet Earth.
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Wortschatz und Sprechhinweise zu dieser Lektion
Diese Sprechübung basiert auf dem Video „How China Built a Dam So Big It Slowed Down Planet Earth“. Diese Wörter kommen am häufigsten vor: river, wall, Yangtze, dam, ton. Dieses Video enthält 94 Sätze und 1271 Wörter zum Nachsprechen. Der gesprochene Teil dauert 8:16. Der Sprecher spricht in natürlichem Tempo, etwa 154 Wörter pro Minute, ähnlich wie im Alltagsgespräch. Nur 64 % der Wörter gehören zu den 3.000 häufigsten im Englischen, der Wortschatz ist also anspruchsvoll.
Wichtiger Wortschatz in diesem Video
15 lernenswerte Wörter aus dem Video, mit Aussprache und Bedeutung:
| Wort | Aussprache | Bedeutung |
|---|---|---|
| concrete Adjektiv | /ˌkɑnˈkɹit/ | konkret, bestimmt |
| ton Substantiv | /tʌn/ | Tonne |
| trap Substantiv | /tɹæp/ | Falle |
| meter Substantiv | /ˈmitəɹ/ | Messgerät |
| canyon Substantiv | /ˈkænjən/ | Schlucht, Felsschlucht |
| reservoir Substantiv | /ˈɹɛz.ə(ɹ).vwɑɹ/ | Reservoir, Behälter |
| stretch Verb | /stɹɛt͡ʃ/ | strecken, dehnen |
| flood Substantiv | /flʌd/ | Flut, Überflutung |
| climb Verb | /ˈklaɪ̯m/ | klettern, steigen |
| cliff Substantiv | /klɪf/ | Klippe, Felsen |
| granite Substantiv | /ˈɡɹæn.ɪt/ | Granit |
| fertile Adjektiv | /ˈfɝːtəl/ | fruchtbar, geil |
| chamber Substantiv | /ˈt͡ʃeɪ̯mbɚ/ | Raum, Schlafzimmer |
| gate Substantiv | /ˈɡeɪ̯t/ | Tor |
| narrow Adjektiv | /ˈnæɹəʊ/ | eng, begrenzt |
Phrasal Verbs, die du hören wirst
| Wort | Bedeutung |
|---|---|
| slow down Verb | verlangsamen |
| hold back Verb | sich zügeln, sich zurückhalten |
| heat up Verb | erhitzen, aufheizen |
Aussprache, auf die du achten solltest
- Die „th“-Laute: beneath /bɪˈniːθ/, thin /ˈθɪn/, thick /θɪk/, mathematics /mæθ(.ə)ˈmæt.ɪks/
- Die Laute „sh“ und „zh“: shore /ʃɔɹ/, artificial /ˌɑː.tɪˈfɪʃ.əl/, structural /ˈstɹʌk(t͡)ʃəɹəl/, crush /kɹʌʃ/, revolutionary /ˌɹɛvəˈluʃənɛɹi/
- Lange Wörter – auf die Betonung achten: electricity /ɪˌlɛkˈtɹɪsɪti/, temporary /ˈtɛmp(əˌɹ)ɛɹi/, operator /ˈɑpəˌɹeɪtɚ/, artificial /ˌɑː.tɪˈfɪʃ.əl/, legendary /ˈlɛd͡ʒ.ənˌdɛɹ.i/
Laute, die Deutschsprachigen schwerfallen:
- /w/ — mit runden Lippen, nicht wie das deutsche „w“ (/v/): reservoir /ˈɹɛz.ə(ɹ).vwɑɹ/, swing /ˈswɪŋ/, weigh /weɪ/, swallow /ˈswɑ.loʊ/, meanwhile /ˈmiːnwaɪl/
- Stimmhafter Auslaut — /b/, /d/, /g/, /z/, /v/ am Wortende nicht verhärten: flood /flʌd/, bend /bɛnd/, cloud /ˈklaʊ̯d/, liquid /ˈlɪk.wɪd/, slide /ˈslaɪ̯d/
- /æ/ — offener als „ä“: trap /tɹæp/, canyon /ˈkænjən/, granite /ˈɡɹæn.ɪt/, narrow /ˈnæɹəʊ/, satellite /ˈsætəlaɪ̯t/
So übst du mit diesem Video
- Höre dir das ganze Video einmal an, ohne zu sprechen, und notiere die Wörter, die du nicht kennst.
- Beginne mit 0,75-facher Geschwindigkeit, sprich Satz für Satz nach und wechsle zur normalen Geschwindigkeit, sobald es leichtfällt.
- Nimm dich auf und vergleiche mit dem Original; achte dabei auf Wörter wie concrete, ton, trap.
Was ist die Shadowing-Technik?
Shadowing ist eine wissenschaftlich fundierte Sprachlerntechnik, die ursprünglich für die professionelle Dolmetscherausbildung entwickelt und durch den Polyglotten Dr. Alexander Arguelles populär gemacht wurde. Die Methode ist einfach aber wirkungsvoll: Du hörst englisches Audio von Muttersprachlern und wiederholst es sofort laut — wie ein Schatten, der dem Sprecher mit nur 1–2 Sekunden Verzögerung folgt. Anders als passives Hören oder Grammatikübungen zwingt Shadowing dein Gehirn und deine Mundmuskulatur, gleichzeitig echte Sprachmuster zu verarbeiten und zu reproduzieren. Studien zeigen, dass es Aussprachegenauigkeit, Intonation, Rhythmus, verbundene Sprache, Hörverständnis und Sprechflüssigkeit signifikant verbessert — was es zu einer der effektivsten Methoden für die IELTS Speaking-Vorbereitung und reale englische Kommunikation macht.