曾经是孤单的小女孩 There was once lonely girl
曾经是小孩
Once a child
以上为机器翻译结果，长、整句建议使用 人工翻译 。
但是，我们都曾经是小孩子。
But we were all children once.
youdao
所有的大人都曾经是小孩，虽然，只有少数的人记得。
All grown-ups were once children, although few of them remember.
All grown-ups were once a child, though, only a few people remember.
"曾经是小孩"是个多义词，它可以指曾经是小孩（马上又演唱歌曲）,曾经是小孩（王一鸣演唱歌曲）。
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