Dutch courage
酒后虚勇；靠酒壮胆
口语·指酒后胆量
英文释义
false courage or bravery, often gained from consuming alcohol
例句
He needed some Dutch courage before asking her out on a date.
典故来源
源自17世纪英荷战争期间，英国人认为荷兰士兵靠喝酒壮胆，后泛指借酒增强的勇气。