Today, World AIDS day, I want to re-introduce two young women whom you may have met once before.

今天是世界艾滋病日，我要再次介绍你们可能在此之前已见过的两位年轻妇女。

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Once having met and liked them, we think how terrible it would have been, had we missed the chance.

一旦认识并喜欢上他们，我们就会想我们当时如果错过了这个机会，那该有多糟糕。

youdao

I have met her once.

我见过她一次。

《新英汉大辞典》

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