If this sequence was not lazy, the lazy-seq-fibo function would get called again and again.

如果这个序列不是惰性的，lazy - seq - fibo函数就会一次又一次地被调用。

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As the name suggests, the lazy-seq macro is used to create a lazy sequence.

正如其名字所暗示的，lazy - seq宏被用来创建一个惰性序列。

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If the argument is an empty sequence, fn: string (seq) will return a zero-length string, but the other function returns an empty sequence.

如果参数是空序列，fn： string (seq)将返回长度为零的字符串，另一个函数则返回空白序列。

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