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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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。

youdao