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They must be taught how to use their speech organs.
必须教他们如何使用发音器官。
youdao
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The speech organs include: lungs, trachea, throat, nose, and the mouth.
言语器官包括：肺，气管，喉，鼻和口。
youdao
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The speech organs include: lungs, trachea, throat, nose, and the mouth.
言语器官包括：肺，气管，喉，鼻和口。
youdao