cold feet

n. 信心或勇气之丧失, 胆怯

例句与用法：

Every actor have cold feet just before the begin of a show.

每一个演员在临到开始表演之前都会心惊“腿”震。

I volunteered to do a parachute jump to raise money for charity but I got cold feet at the last minute and didn't to through with it.

为慈善事业筹集资金我自愿参加跳伞，可是在最后一刻我临阵害怕了，结果没有完成任务。

She got cold feet when asked to recite in class.

当她被叫起来在班上背诵时害怕了。

He got cold feet at the last minute.

他事到临头却退缩了。

详细释义：

ph.

【口】发慌; 害怕; 胆小; 退缩

The groom got cold feet just before the wedding and ran off.

就在婚礼开始之前, 新郎退缩, 溜走了。