This is because although completely different hashes are returned for the same string, it just becomes a matter of time before keys are linked to hashes.
这是因为尽管从不同的散列中获得同一个字符串的返回值，但是将关键字链接到散列上也只是时间的问题。
The uuid-based keys are an essentially random hexadecimal string in a defined format that serves no purpose beyond that of ensuring uniqueness.
基于uuid的键本质上就是一个随机的、有确定格式的十六进制字符串，这个格式仅仅是为了确保键的唯一性。
The loop including line 3 of the listing is working through the keys received, getting a corresponding value, and printing it as an array or a string.
包含清单第3行的循环将遍历接收到的键，获得相应值，并把它作为数组或字符串输出。
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