小男孩在换尿布时好奇地看着自己的小鸡鸡。

The little boy looked curiously at his penis while getting his diaper changed.

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The little boy looked curiously at his penis while getting his diaper changed.

penis 是医学术语,指男性外生殖器官,中文俗称"阴茎"或口语中常说的"小鸡鸡"。这个词源自拉丁语,在医学和生物学领域使用较为正式。

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