四足动物的脖子通常很长，这样它们就可以毫不费力地够到食物，但是大象的脖子很短，这样它就可以更容易地支撑它巨大的头和沉重的牙齿的重量。
The neck of four footed animals is usually long, to have them reach their food without difficulty, but the elephant has a short neck, to make him more easily support the weight of his huge head and heavy teeth.
如果精神科医生为病人治疗时增加像太极这样的锻炼，这并不费力，很容易去做，这将是一件很有益的事情，而不是给病人增加服药。
A. “If a psychiatrist were to add exercise like tai chi, which is very nondemanding and easy to access, that would be a very beneficial thing instead of adding another drug.
当我们看待我们的语言时，我们将其理解为统一而不可分割的，我们听见一个词、想到它的意思、用其他的词来回复，毫不费力，在语言领域它们似乎是不可分割的一个整体，我们这么容易就被骗了！
When we consider our language, it seems unified and indivisible. We hear a word, attach meaning to it, and use other words to reply.
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