无论出于什么原因，我们的祖先们开始互相的复制声音，技巧和习惯。
Whatever the reason, our ancestors began to copy sounds, skills and habits from one to another.
这里至关重要的一点当然就是他们复制了各种声音，技巧和习惯，而我认为正是这些让人类独一无二。
The critical point here is, of course, that they copied these sounds, skills and habits, and this, I suggest, is what makes humans unique.
要教会他们新的技巧和习惯，需要通过鼓励他们的耐心、夸奖和奖励零食或游戏时间来实现。
Patience encouragement, praise, and rewards such as treats or play may be required to train new behaviors.
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