他借酒壮胆，走上前去向她作自我介绍。

Emboldened by the wine, he went over to introduce himself to her.

《牛津词典》

问题是，如果你借酒壮胆，那么你可能会一直需要它，这也是它被称为酒精依赖的原因。

The problem is if you use alcohol as a crutch, you will always need it as a crutch. Hence it being called a crutch.

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