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From VOA Learning English, this is the Science Report.
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Medical adhesive products are becoming more common.
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Doctors use medical adhesives to help reconnect damaged tissue.
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They are able to stick fast and hold the tissue together.
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But until recently, no product had been approved for use inside the human body.
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Earlier this year, the United States Food and Drug Administration approved a kind of biodegradable glue for use in surgical operations.
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The product, called tissue glue, breaks down over time.
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Eric Beckman teaches engineering at the University of Pittsburgh.
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He says tissue glue was created by accident.
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Around 2001, Mr. Beckman and a dental surgeon at the university were working on a problem.
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They had set out to design a tissue regeneration substance in a laboratory.
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In the process, they accidentally discovered a sticky, glue-like substance.
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Tissue glue is a chemical compound used to make plastic.
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It is non-toxic, meaning it is not harmful to humans.
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Doctors can now use it to connect big pieces of skin and tissue inside the body.
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Eric Beckman says the university researchers recognized the possibility of developing and marketing tissue glue.
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Nothing like that existed for use inside the body.
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Professor Beckman says the Food and Drug Administration approved the glue for connecting
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large skin flaps in an operation that removes extra fat and skin.
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He says the product also helps reduce fluid buildup by holding tissues close together.
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The new glue also means fewer medical problems and a quicker recovery for the patient.
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In Europe, tissue glue has been approved for use in breast cancer and lymph node dissection surgeries.
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Vocabolario e note di pronuncia per questa lezione
Questo video contiene 22 frasi e 268 parole da ripetere con lo shadowing. Il parlato dura 2:51. Chi parla lo fa lentamente, circa 94 parole al minuto, quindi c’è tempo per imitare ogni suono. Solo il 75% delle parole rientra nelle 3.000 più comuni dell’inglese, quindi il lessico è impegnativo.
Vocaboli chiave di questo video
15 parole meno comuni del video, con pronuncia e significato:
- tissue /ˈtɪʃ.(j)u/ (sostantivo) — tessuto. Thin, woven, gauzelike fabric.
- glue /ɡlu/ (sostantivo) — colla. A hard gelatin made by boiling bones and hides, used in solution as an adhesive; or any sticky adhesive substance.
- approve /əˈpɹuːv/ (verbo) — approvare. To officially sanction; to ratify; to confirm; to set as satisfactory.
- connect /kəˈnɛkt/ (verbo) — connettere, connettersi. To join (to another object): to attach, or to be intended to attach or capable of attaching, to another object.
- substance /ˈsʌbstəns/ (sostantivo) — sostanza. Physical matter; material.
- discover /dɪˈskʌvə/ (verbo) — scoprire, trovare. To find or learn something for the first time.
- breast /bɹɛst/ (sostantivo) — mammella, poppa. Either of the two organs on the front of a female human's chest, which contain the mammary glands; also the analogous organs in males.
- fewer /ˈfjuː.ɚ/ — meno. Less; a smaller amount of something non-integral commonly expressed as an integer
- laboratory /ˈlæb(ə)ɹəˌtɔɹi/ (sostantivo) — laboratorio. A room, building or institution equipped for scientific research, experimentation or analysis.
- toxic /ˈtɒk.sɪk/ (aggettivo) — tossico. Having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities.
- accidentally /ˌæk.sɪˈdɛnt(ə)li/ (avverbio) — casualmente, accidentalmente. In an accidental manner; by chance, unexpectedly.
- fluid /ˈflu.ɪd/ (sostantivo) — fluido. Any substance which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma.
- compound /ˈkɑmpaʊnd/ (sostantivo) — composto, miscuglio. Anything made by combining several things.
- surgeon /ˈsɝd͡ʒən/ (sostantivo) — chirurgo. One who performs surgery; a doctor who performs operations on people or animals.
- dental /ˈdɛn.təl/ (aggettivo) — dentario, dentale. Of or concerning the teeth.
Pronuncia a cui fare attenzione
- I suoni “sh” e “zh”: tissue /ˈtɪʃ.(j)u/, dissection /dɪˈsɛkʃən/
- Parole lunghe — attenzione all’accento: laboratory /ˈlæb(ə)ɹəˌtɔɹi/, accidentally /ˌæk.sɪˈdɛnt(ə)li/, biodegradable /(ˌ)baɪoʊdəˈɡɹeɪdəbl̩/
Come esercitarsi con questo video
- Ascolta tutto il video una volta senza parlare e annota le parole che non conosci.
- Fai shadowing frase per frase a velocità normale, ripetendo ognuna finché il tuo ritmo coincide con quello di chi parla.
- Registrati e confronta con l’originale, facendo attenzione a parole come tissue, glue, approve.
Cos'è la tecnica dello Shadowing?
Shadowing è una tecnica di apprendimento delle lingue supportata da studi scientifici, originariamente sviluppata per la formazione dei traduttori professionisti e resa popolare dal poliglotta Dr. Alexander Arguelles. Il metodo è semplice ma potente: ascolti un audio in inglese di madrelingua e lo ripeti immediatamente ad alta voce — come un'ombra che segue il parlante con un ritardo di solo 1–2 secondi. A differenza dell'ascolto passivo o degli esercizi di grammatica, lo shadowing costringe il tuo cervello e i muscoli della bocca a elaborare e riprodurre simultaneamente i modelli di discorso reale. La ricerca dimostra che migliora significativamente la precisione della pronuncia, l'intonazione, il ritmo, il discorso connesso, la comprensione dell'ascolto e la fluidità del parlato — rendendolo uno dei metodi più efficaci per la preparazione alla prova di speaking dell'IELTS e per la comunicazione reale in inglese.