1. Is as the proportion of the total vocabulary of his mother tongue against those words of his own baby talk that are taken up into the vernacular of his family.
    就好像他本国语言的总词汇量和自己咿呀学语时他家庭所接纳的他的词汇量之比。

2. When Kizzy was four or five, the African would take her by the hand and lead her round the farm and teach her names of things in his native tongue: one word for tree, another for rock, another for cow.
    当吉西四五岁的时候，老非洲就拉着她的手带她去农场转上一圈，教她用土著语说出各种事物的名称：一个词代表着“树”，一个词代表“岩石”，另一个词代表“母牛”。

3. The impertinent boy put his tongue out at me.
    那个无礼的男孩子对我吐舌头。

4. There seems to be nothing wrong with his mouth and tongue, but he cannot speak.
    他的嘴和舌好像没有什么毛病，可是却讲不出话来。

5. Then he began to talk to us about the French language, saying that it was the most beautiful tongue in the world, and that we must keep it among us and never forget it.
    然后他开始对我们讲起了法兰西语言。他说法语是世界上最美的语言，我们一定要经常讲，永远不要忘掉。

6. Their flexibility of the tongue and lips is acquired later, and with no small difficulty.
    他们舌和唇的适应性是稍大之后取得的，而且不是一学就会。

7. He is extending his eyes with rader; his tongue and his ear through through telecommunucations.
    人类借助雷达来扩大视野；借助电讯来延伸自己的声音和听觉；

8. How does it happen that children learn their mother tongue so well?
    儿童的母语学得如此之好，这是什么原因呢？

9. Doctor: Open your mouth, Jimmy. Show me your tongue. Say, ´Ah´.
    医生: 吉米, 把嘴张开. 让我看看你的舌头. 说"啊".

10. An insolent boy stuck his tongue out at us.
    一个无礼的男孩对我们伸出了舌头。

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