Shadowing Practice: These Solar-Powered Carnivorous Flatworms Divide and Conquer | Deep Look - Learn English Speaking with Video
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Those aren't cornflakes.
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This rock is absolutely covered with tiny marine flatworms called acyles.
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They're not just an animal.
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They're also kind of a plant.
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And they're practically immortal.
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They use simple eyes called ocelli to seek out the sunniest spots on tropical coral reefs,
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where they spread themselves out like beach blankets.
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But they don't just lay around sunbathing all day.
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Aseals are also skilled hunters.
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They catch prey by engulfing them with their body and jamming them into their mouth.
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You can see their meal trying in vain to escape.
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Also, they don't have a butt.
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Their poop just goes right back out through their mouth.
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So you wouldn't want to kiss one.
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They aren't just hunters.
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These acyls are gardeners, too.
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See those green dots?
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Those are algae.
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And those reddish cells belong to the acyl itself.
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When the sun hits our flatworm friend, the algae inside produce sugars through photosynthesis.
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This is a waste.
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Researchers think they share those sugars with their host.
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In return, the acyl provides its, um, waste, which is kind of like fertilizer for the algae.
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And the acyl protects its houseguests.
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Researchers think the acyls pack toxic chemicals in those reddish cells.
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So predators tend to leave them alone.
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Without its algae, the acyl would eventually die, even if it had plenty of prey to eat.
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Scientists call a creature like this a Holobiant — a single being made up of two or more completely different species.
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In this case, a solar -powered predator.
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But that's not even the weirdest thing about them.
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Researchers at Stanford University and the University of San Francisco are studying A -seals because of how they regenerate.
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And to do that?
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It'll be okay.
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I promise.
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You'd think getting cut in half would be a bad thing.
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But within minutes, the wounded front half seals up.
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In a couple days, it'll have a whole new tail. And the backside?
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It doesn't just make a new head.
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It makes two!
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But it's hard to share one body with two heads.
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So each half eventually pulls away from the other.
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Where there was once one acyl, now there are three.
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What seemed like a moment of doom was actually one of rebirth.
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But they don't need the researcher's scalpel.
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Aseals can drop their tail and clone themselves on their own.
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The Aseal and its algae can multiply themselves like this over and over, indefinitely, making them functionally immortal.
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Aseals can do this because they're packed with stem cells, which morph into any body part the Aseal needs to regrow.
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And since they can't hunt until they grow new heads, they're extra reliant on the energy they get from their algae.
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In these desperate times, the acyls even eat some of their algae.
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Sorry.
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Every relationship has its challenges.
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But the acyl and its algae have a deal.
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By taking advantage of each one's abilities, they're greater than the sum of their parts.
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Hey, it's Laura.
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Guess who else could be considered a holobiant?
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You.
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You've got a whole zoo of bacteria and other living things inside your gut that are vital to a healthy immune system, digestion, and even mood.
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And if you want to keep
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Deep Look healthy, support our show on Patreon.
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For a very limited time, if you become a $10 a month Patreon supporter, you'll get a fabulous
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Deep Look pint glass, and at $5 a month, a special Deep Look sticker.
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We can't make these videos without you.
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Join us on Patreon now.
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Link in the description.
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Woordenschat en spreektips bij deze les
Deze spreekles is gebaseerd op de video “These Solar-Powered Carnivorous Flatworms Divide and Conquer”. Deze woorden komen het vaakst terug: acyl, algae, Aseal, Patreon, researchers. Deze video bevat 64 zinnen en 591 woorden om na te spreken. Het gesproken deel duurt 5:03. De spreker praat in een gelijkmatig tempo van ongeveer 117 woorden per minuut, prettig om te shadowen. Slechts 76% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden, dus de woordenschat is pittig.
Belangrijke woorden in deze video
15 woorden uit de video die het leren waard zijn, met uitspraak en betekenis:
| Woord | Uitspraak | Betekenis |
|---|---|---|
| researcher zelfstandig naamwoord | /ˈɹiˌsɝ.t͡ʃɚ/ | onderzoeker |
| hunter zelfstandig naamwoord | /ˈhʌntɚ/ | jachthond |
| tail zelfstandig naamwoord | /ˈteɪ̯l/ | staart |
| seal zelfstandig naamwoord | /siːl/ | zegel |
| prey zelfstandig naamwoord | /pɹeɪ/ | prooi |
| immortal bijvoeglijk naamwoord | /ɪˈmɔɹtəl/ | onsterfelijk, ondoodbaar |
| predator zelfstandig naamwoord | /ˈpɹɛd.ə.tɚ/ | roofdier n roofvis, predator |
| meal zelfstandig naamwoord | /ˈmiːl/ | maaltijd |
| mood zelfstandig naamwoord | /muːd/ | humeur, stemming |
| skill zelfstandig naamwoord | /skɪl/ | bekwaamheid, vaardigheid |
| belong werkwoord | /bɪˈlɒŋ/ | thuishoren, horen |
| vital bijvoeglijk naamwoord | /ˈvaɪtəl/ | levens- |
| desperate bijvoeglijk naamwoord | /ˈdɛs.p(ə.)ɹɪt/ | wanhopig, vertwijfeld |
| butt zelfstandig naamwoord | /bʌt/ | kont, achterste |
| toxic bijvoeglijk naamwoord | /ˈtɒk.sɪk/ | giftig, toxisch |
Phrasal verbs die je zult horen
| Woord | Betekenis |
|---|---|
| back out werkwoord | zich terugtrekken |
Uitspraak om op te letten
De spreker gebruikt 20 samentrekkingen en verkorte vormen, zoals they're, don't, aren't. Spreek ze kort uit, zoals je ze hoort.
- De “th”-klanken: photosynthesis /ˌfoʊ.toʊˈsɪn.θə.sɪs/, rebirth /ɹiːˈbɜːθ/, sunbathe /ˈsʌnbeɪð/
- Lange woorden — let op de klemtoon: practically /ˈpɹæk.tɪ.k(ə.)li/, indefinitely /ɪnˈdɛfɪnɪtli/, photosynthesis /ˌfoʊ.toʊˈsɪn.θə.sɪs/, regenerate /ɹiːˈd͡ʒɛnəɹeɪt/
Klanken die Nederlandstaligen lastig vinden:
- Stemhebbende eindmedeklinker — /b/, /d/, /g/, /z/, /v/ niet verscherpen: mood /muːd/, wound /ˈwund/, backside /ˈbækˌsaɪd/
- /æ/ — opener dan de Nederlandse “e”: practically /ˈpɹæk.tɪ.k(ə.)li/, jam /ˈd͡ʒæm/, fabulous /ˈfæbjʊləs/, blanket /ˈblæŋ.kɪt/, acyl /ˈæ.sɪl/
- /g/ — een harde plofklank, geen Nederlandse “g”: alga /ˈæl.ɡə/, engulf /ɪŋˈɡʌlf/, houseguest /ˈhaʊsˌɡɛst/
Zo oefen je met deze video
- Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
- Spreek zin voor zin na op normale snelheid en herhaal elke zin tot je ritme gelijk is aan dat van de spreker.
- Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als researcher, hunter, tail.
Wat is de Shadowing-techniek?
Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.