“Keep one's fingers crossed”字面意思是将手指交叉起来，通常是用中指压住食指。当听到有人这句话，其实他是在祈祷某事获得好运或成功。

【例句】
I'll keep my fingers crossed for you!
我会为你祈福的！

I'm keeping my fingers crossed that he'll pass the exam.
我祈祷能通过考试。