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Age is an integer, and must be non-negative.
年龄是整数，并且必须是非负数。
youdao
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The size of the integer doesn't matter, only if it's positive or negative.
它数值大小不重要，重要的是它为正还是为负。
youdao
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The size of the integer doesn't matter, only if it's positive or negative.
它数值大小不重要，重要的是它为正还是为负。
youdao