盡管自然界的許多物種具備使牙齒反復再生的能力，但人類隻有一次換牙期，長出一口健康恒牙的機會也隻有一次。不過現在，這個情況或將改變。
Researchers from King’s College and Imperial College developed a material that mimics the environment needed for tooth development, allowing cells to send signals and begin forming a tooth.
倫敦國王學院和帝國理工大學的研究人員研發出瞭一種模擬牙齒生長環境的材料，這種材料可以促使細胞發出信號並開始形成牙齒。
The idea is that the lab-grown teeth would naturally regenerate and integrate into the jaw, creating a new set that’s stronger and far more durable than traditional fillings or implants.
這項研究的想法是讓實驗室培育的牙齒能夠自然地再生並與頜骨結合在一起，從而長出一套更堅固的新牙，其耐用度也會優於補牙用的傳統填充材料或種植牙。
It could take years before these lab-grown teeth are seen in the mouths of dental patients. But scientists say once they discover how to do it, it will revolutionise oral health.
我們可能還需要很多年時間才能看到這種在實驗室中培育的牙齒被應用於牙科患者的口腔中。但是科學傢們表示，一旦他們研究出應用方法，此項技術就將徹底改變口腔健康。
詞匯表
mimics 模擬，模仿
signals 信號
forming 形成
lab-grown 在實驗室裡培育或合成的
integrate 結合，融合
jaw 頜骨
durable 耐用的，持久的
fillings （補牙的）填料，填充物
implants 種植牙，植入物
oral health 口腔健康
聽力練習
一、聽第一遍音頻，回答問題。
1. What have researchers discovered how to do with teeth?
二、用一分鐘閱讀下列問題，然後聽第二遍音頻並回答問題。
1. Scientists have created something similar to where teeth normally grow
a. True
b. False
c. Not given
2. What part of the body creates the tooth?
a. jaws
b. cells
c. implants
3. Scientists hope to develop something that will last longer than current ways of replacing teeth.
a. True
b. False
c. Not given
4. Patients will soon be able receive lab-grown teeth.
a. True
b. False
c. Not given
三、聽第三遍音頻，將句子補充完整。（提示：可以反復聽，直到聽清楚每一個詞）
1. The idea is that the lab-grown teeth would naturally regenerate and integrate into the jaw, creating a new set that’s stronger and far more durable than traditional ________________.
2. It could take years before these lab-grown teeth ________________ the mouths of dental patients.
答案
一、聽第一遍音頻，回答問題。
1. What have researchers discovered how to do with teeth?
Researchers have discovered how to grow teeth in a laboratory.
二、用一分鐘閱讀下列問題，然後聽第二遍音頻並回答問題。
1. a. True. Researchers from King’s College and Imperial College developed a material that mimics the environment needed for tooth development, allowing cells to send signals and begin forming a tooth.
2. b. cells. Researchers from King’s College and Imperial College developed a material that mimics the environment needed for tooth development, allowing cells to send signals and begin forming a tooth.
3. a. True. The idea is that the lab-grown teeth would naturally regenerate and integrate into the jaw creating a new set that’s stronger and far more durable than traditional fillings or implants.
4. b. False. It could take years before these lab-grown teeth are seen in the mouths of dental patients.
三、聽第三遍音頻，將句子補充完整。（提示：可以反復聽，直到聽清楚每一個詞）
1. The idea is that the lab-grown teeth would naturally regenerate and integrate into the jaw creating a new set that’s stronger and far more durable than traditional fillings or implants.
2. It could take years before these lab-grown teeth are seen in the mouths of dental patients.
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