Shadowing Practice: 🔥The Argus System - Đề thi IELTS LISTENING kèm đáp án - transcript - Learn English Speaking with Video
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I would like to tell you how the Argus computerised photography system has helped marine researchers.
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Then I shall talk a bit about sand collecting.
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Well, Argus is the system Dr. Rob Holman developed
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when he was working at a research pier on the coast of North Carolina about 20 years ago.
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This pier stretches out over the water and it's the longest research pier in the world, with an observation tower on the end of it.
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The researchers there make precise measurements of how the sand moves about under the waves,
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This research is critical to the study of beach erosion in places where the coastline is being worn away.
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The Argus system helps to solve the difficulties encountered by these researchers.
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The system correlates the data from under the water with what Dr Holman gets from his fixed camera,
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which is mounted above the water on the pier and uses time -lapse photography.
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Some of Dr. Holman's results have changed the way people understand how sand moves.
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To quote S.
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Jeffries Williams, a coastal geologist with the United States Geological Survey, the system is "a critical piece of new technology."
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And the Argus system allows us to quantify
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and document visually the changes to the coast on a variety of different time frames.
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A lot of these take place when there is a storm, or at other times when it is difficult to have people out on the beach making observations and taking measurements.
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Up to now, Argus installations have been installed in places in Oregon, California, Hawaii, England, the Netherlands,
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Australia, New Zealand, Spain, Italy and Brazil, as well as in North Carolina.
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Now, I'd like to introduce Dr. Holman's sand collection.
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He started collecting sand in the 1980s and he still collects it now, even though he has around a thousand samples.
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They come from his travels and from geologists and amateurs all over the world.
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and the collection includes sand from each continent, including Antarctica.
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People send him sand in envelopes, plastic bags, paper towels and all sorts.
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Each is stored in a glass jar, which Dr. Holman labels by latitude and longitude of its origin.
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as well as he can work them out.
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Sometimes the information is a bit sketchy.
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Anyway, it's mainly geology students at the university who study his collection.
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and they can learn a lot from it.
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For instance, one set of tubes displays sand from the east coast of the US,
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so you can see that the sand gets lighter and finer from north to south.
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By the time a grain of sand eventually washes up on a beach in Florida, at the southern end of that journey, it has been battered by waves for a long time.
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So the grains are fine and rounded, because most of the time sand is not stationary on the beach.
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OK, so if you'd like to collect sand and maybe even send some to Dr. Holman, how should you go about it?
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Well, the list of equipment is very short and easy to find, but you should keep a supply when you're travelling,
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as you never know when you'll come across an interesting sand sample.
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One really handy thing for digging sand, especially if it's hard or frozen, is a spoon.
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"'It's perfect for that.' If you're travelling by air, it'll have to be plastic, but metal is preferable, as plastic tends to break.
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You need something to put the samples in that is damp proof and easy to carry.
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You can just use plastic bags, but you need to record the location and date on the bag, so you must also have a permanent marker with you,
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because you can never assume you will remember where you gathered a sample from later on, And you don't want it to rub off before you get home.
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And that's about all you need in the field to collect sound.
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When you get home, your samples should be logged in a notebook or computer.
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You need to note the location
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and be really specific as to exactly whereabouts on the beach you gathered your sample: low tide mark,
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under cliff area, etc. Then you store your sample.
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You want to keep everything in good condition and avoid contamination.
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So first you make absolutely sure that each sample is perfectly dry You don't need any complicated apparatus for this.
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You can just air it out on layers of newspaper, which is suitably absorbent.
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Most people find that's the best way.
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Then, lastly, but this is really important, before there can be any chance of confusing this later sample with another,
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you put it in a clean small bag or a jar and you must stick an identification label on straight away.
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Some people put one inside as well, in case the outer label falls off, but that's up to you.
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Well, that's about all you need to know to get started as a sand collector.
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Any questions?
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That is the end of section 4.
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You now have half a minute to check your answers.
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Vocabulario y notas de pronunciación para esta lección
Esta lección de conversación de nivel B2 se basa en el vídeo “🔥The Argus System - Đề thi IELTS LISTENING kèm đáp án - transcript”. Las palabras que más se repiten: sand, sample, Argus, beach, Holman. Este vídeo tiene 57 frases y 847 palabras para practicar shadowing. La parte hablada dura 6:05. El hablante mantiene un ritmo constante de unas 139 palabras por minuto, cómodo para el shadowing. Solo el 81 % de las palabras está entre las 3.000 más comunes del inglés, por lo que el vocabulario es exigente.
Vocabulario clave de este vídeo
Las 15 palabras más avanzadas del vídeo, con su pronunciación y significado:
| Palabra | Pronunciación | Significado |
|---|---|---|
| pier sustantivo | /pɪɹ/ | muelle, embarcadero |
| researcher sustantivo | /ˈɹiˌsɝ.t͡ʃɚ/ | investigador, investigadora |
| geologist sustantivo | /d͡ʒiˈɑːlədʒɪst/ | geólogo, geóloga |
| measurement sustantivo | /ˈmɛʒ.ə.mənt/ | medida, medición |
| observation sustantivo | /ˌɑbzɚˈveɪʃn̩/ | observación, vigilancia |
| grain sustantivo | /ɡɹeɪn/ | grano |
| absorbent adjetivo | /æbˈsɔɹ.bn̩t/ | absorbente |
| correlate verbo | /ˈkɔɹəleɪt/ | correlacionar |
| longitude sustantivo | /ˈlɑnd͡ʒəˌtud/ | longitud |
| preferable adjetivo | /ˈpɹɛf.(ə.)ɹə.b(ə)l/ | preferible |
| quantify verbo | /ˈkwɑn.tɪˌfaɪ/ | cuantificar, cifrar |
| suitably adverbio | apropiadamente | |
| coastline sustantivo | línea costera | |
| whereabouts sustantivo | /ˌ(h)wɛəɹəˈbaʊts/ | paradero |
| batter verbo | /ˈbætə/ | apalear |
Phrasal verbs que vas a escuchar
| Palabra | Significado |
|---|---|
| come across verbo | pasarse a |
| fall off verbo | caer |
Gramática en este vídeo
Las estructuras que más usa el hablante, con las palabras exactas del vídeo:
| Estructura | En el vídeo |
|---|---|
| Voz pasiva be + participio pasado — importa lo que ocurre, no quién lo hace | being worn · is mounted · have been installed |
| Present perfect have/has + participio pasado — una acción pasada que sigue importando ahora | has helped · have changed · have been installed |
Pronunciación a tener en cuenta
El hablante usa 8 contracciones y formas reducidas, como don't, you're, I'd. Dilas en su forma corta, tal como las oyes.
- Los sonidos de “sh” y “zh”: measurement /ˈmɛʒ.ə.mənt/, observation /ˌɑbzɚˈveɪʃn̩/, stationary /ˈsteɪʃəˌnɛɹi/, erosion /ɪˈɹəʊʒən/, contamination /kənˌtæm.əˈneɪ.ʃən/
- Palabras largas — cuida el acento: geologist /d͡ʒiˈɑːlədʒɪst/, preferable /ˈpɹɛf.(ə.)ɹə.b(ə)l/, stationary /ˈsteɪʃəˌnɛɹi/, visually /ˈvɪzju.əli/, contamination /kənˌtæm.əˈneɪ.ʃən/
Sonidos difíciles para hispanohablantes:
- s + consonante al inicio — sin añadir una “e” delante: sketchy /ˈskɛt͡ʃi/, stationary /ˈsteɪʃəˌnɛɹi/, spoon /spuːn/
- /v/ — no es /b/: los dientes tocan el labio inferior: observation /ˌɑbzɚˈveɪʃn̩/, visually /ˈvɪzju.əli/, envelope /ˈɛnvə(ˌ)loʊp/
- /z/ — sonora, no /s/: observation /ˌɑbzɚˈveɪʃn̩/, confuse /kənˈfjuːz/, visually /ˈvɪzju.əli/, freeze /ˈfɹiːz/
Cómo practicar con este vídeo
- Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
- Haz shadowing frase por frase a velocidad normal, repitiendo cada una hasta que tu ritmo coincida con el del hablante.
- Grábate y compara con el original, prestando atención a palabras como pier, researcher, geologist.
¿Qué es la Técnica de Shadowing?
Shadowing es una técnica de aprendizaje de idiomas respaldada por la ciencia, desarrollada originalmente para la formación de intérpretes profesionales y popularizada por el políglota Dr. Alexander Arguelles. El método es simple pero poderoso: escuchas audio en inglés nativo y lo repites en voz alta de inmediato, como una sombra que sigue al hablante con solo 1-2 segundos de retraso. A diferencia de la escucha pasiva o los ejercicios de gramática, el shadowing obliga a tu cerebro y músculos de la boca a procesar y reproducir simultáneamente patrones de habla reales. Las investigaciones muestran que mejora significativamente la precisión de la pronunciación, la entonación, el ritmo, el habla conectada, la comprensión auditiva y la fluidez al hablar, convirtiéndola en una de las metodologías más efectivas para la preparación del IELTS Speaking y la comunicación en inglés en el mundo real.