fall on one's face

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释义
栽跟头；丢脸
To fail thoroughly or in a spectacular or embarrassing way.

例句
Claire : Sometimes I just think my job is to make sure you guys don't fall on your faces. (Modern Family)
克莱尔：有的时候我认为我的工作就是防止家人栽跟头。（摩登家庭）