社会交换的广泛性使人们有兴趣按照交换去考察所有的社会行为，但这将使此概念失去其独特的意义。

The extension which the society exchanges makes people interested according to exchanging and investigating all social behaviors, but this will make this concept lose its unique meaning.

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因为排序是一个仅仅对序列有意义的概念。这大概意味着你想让字典的序列的值按照通过排列的键值顺序获得。

Because sorting is a concept that only makes sense for sequences, this presumably means that you want a sequence of the values of the dictionary in the order obtained by sorting the keys.

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