Shadowing Practice: Transforming grass into building materials | Vietnam Today - Learn English Speaking with Video
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In Europe, the green economy comprises of renewable energy,
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electric vehicles and often specific types of markets such as building materials.
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In Belgium, a company is transforming excess grass from riverbanks,
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canals, parks and urban areas into bio-insulation panels for homes and buildings.
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Let's find out more in a report from the Vietnam Television Correspondent Team in Europe.
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Instead of being discarded, grass cut from canal banks,
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river banks, parks or urban areas in Belgium is being processed into a new production line.
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At a Belgian company's factory,
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this grass is used to produce bio-insulating panels for the construction industry.
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Notably, this is not grass grown on agricultural land.
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The company does not use cultivated land,
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does not need irrigation and does not use fertilizers or pesticides to produce the raw material.
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When trucks carrying dry grass arrive at the factory,
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the material is checked for moisture content,
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then put through a cleaning system to remove dust and impurities such as wood, stone or metal.
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The grass is brought here.
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We work in bulk in bulk
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so there's a truck coming with a walking floor who pushes all the grass behind us
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and after that is done the whole building behind me is used to treat the grass
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so we remove all the dust and fine particles of the grass
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and then we also remove all the pieces of wood
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stone metal that we can also find in the grass we do this
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because the grass that we are using is not coming from agricultural land
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so it can contain other pollution that we don't want into your final product.
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After cleaning, the grass is mixed with recycled jute fibers from old coffee and cocoa bags and a binder.
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According to the company, the finished material consists of approximately 70% grass,
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20% recycled jute fibers and 10% binder.
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The fiber mixture then passes through a conveyor belt and is fed into an oven at approximately 160 degrees Celsius.
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Upon exiting the oven, the fibers have formed flat sheets which are cooled,
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measured for thickness, cut to standard dimensions and package for delivery to the construction site.
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So we just cooked the panel so the raw material enters the oven and the oven is at 160 degrees.
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So it's the same temperature as to cook a fish.
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So we have a low temperature and low energy process
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and once it gets out of the oven we are cooling the panel
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and then it's ready to be cut into the the right dimension.
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Not only does this production line create new materials from biological sources,
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but it is also designed to minimize waste.
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The excess material from cutting is crushed and returned to the production line.
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The company also encourages customers to bring leftover materials back to the factory for recycling.
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At the construction site, grass-based insulation panels are installed in walls and ceilings,
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providing both thermal and sound insulation.
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In Europe, this is a concrete example of the bio-economy utilizing local by-products,
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partially replacing traditional materials and reducing the ecological footprint of the construction industry.
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The story in Belgium shows that the green economy is not only about advanced technology,
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sometimes it starts with a simple idea,
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turning ordinary local resources such as roadside or cannon grass into products that create both economic and environmental value.
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Thế Dũng, reporting from Europe for Vietnam Today.
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Vocabulario y notas de pronunciación para esta lección
Esta lección de conversación de nivel B2 se basa en el vídeo “Transforming grass into building materials”. Las palabras que más se repiten: grass, material, oven, panel, fiber. Este vídeo tiene 47 frases y 564 palabras para practicar shadowing. La parte hablada dura 4:01. El hablante mantiene un ritmo constante de unas 140 palabras por minuto, cómodo para el shadowing. Solo el 76 % 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 |
|---|---|---|
| oven sustantivo | /ˈʌ.vn̩/ | horno |
| recycle verbo | /ɹəˈsaɪkəl/ | reciclar |
| insulation sustantivo | /ˌɪnsəˈleɪʃən/ | aislamiento, aislación |
| binder sustantivo | /ˈbaɪndɚ/ | carpeta, archivador |
| jute sustantivo | /d͡ʒuːt/ | yute |
| dimension sustantivo | /daɪˈmɛn.ʃən/ | dimensión |
| bulk sustantivo | /bʌlk/ | masa |
| cultivate verbo | /ˈkʌltɪveɪt/ | cultivar |
| discard verbo | /dɪsˈkɑɹd/ | desechar, descartar |
| impurity sustantivo | /ɪmˈpjɝɪti/ | impuridad |
| insulate verbo | /ˈɪnsʊleɪt/ | aislar |
| leftover adjetivo | sobrante | |
| pesticide sustantivo | /ˈpɛstɪsaɪd/ | pesticida, plaguicida |
| riverbank sustantivo | /ˈɹɪv.ɚˌbæŋk/ | orilla, benque |
| roadside sustantivo | /ˈɹoʊdsaɪd/ | arcén |
Phrasal verbs que vas a escuchar
| Palabra | Significado |
|---|---|
| find out verbo | averiguar, anoticiarse |
| get out of verbo | salirse de, ponerse fuera de |
| pass through verbo | atravesar |
| put through verbo | poner con |
Pronunciación a tener en cuenta
- Los sonidos de “th”: thickness /ˈθɪknəs/, thermal /ˈθɜːməl/
- Los sonidos de “sh” y “zh”: insulation /ˌɪnsəˈleɪʃən/, dimension /daɪˈmɛn.ʃən/, irrigation /ˌɪɹəˈɡeɪʃən/, crush /kɹʌʃ/, partially /ˈpɑɹʃəli/
- Palabras largas — cuida el acento: insulation /ˌɪnsəˈleɪʃən/, irrigation /ˌɪɹəˈɡeɪʃən/, ecological /ˌiːkəˈlɒd͡ʒɪkl̩/
Sonidos difíciles para hispanohablantes:
- /v/ — no es /b/: los dientes tocan el labio inferior: oven /ˈʌ.vn̩/, conveyor /kənˈveɪɚ/, cultivate /ˈkʌltɪveɪt/, riverbank /ˈɹɪv.ɚˌbæŋk/
- /z/ — sonora, no /s/: comprise /kəmˈpɹaɪz/, utilize /ˈjuː.tɪ.laɪz/, minimize /ˈmɪn.ɪˌmaɪz/
- /dʒ/ — no es la “y” ni la “ch”: jute /d͡ʒuːt/, ecological /ˌiːkəˈlɒd͡ʒɪkl̩/
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 oven, recycle, insulation.
¿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.