nerve

He felt a sharp pain shoot down his nerve as he bumped his elbow against the table.

他感觉一阵剧痛窜过他的神经，当他撞到桌子时。

It takes a lot of nerve to be a bomb disposal expert.

当拆弹专家需要极大的勇气。

She's late for work every day, but she still has the nerve to lecture me about punctuality.

她天天迟到，居然还有脸教训我要准时。