2. Language is a test case for human cognitive development, but parents eager to teach their infants should take note. 语言是人类认知发展中的一个测试案例,但那些渴望教孩子的父母应该注意。
3. Next time you chat with a friend, take note of his body language for it might show whether he's interested in your words or not. 下次和朋友聊天时,注意看他的的肢体语言,因为这可以看出他对你的话是否感兴趣。