I clenched the steering wheel in frustration as I drove home .

回家的路上，我紧握着方向盘，满心的沮丧和失落。

The boy clenched his fists in anger .

那男孩愤怒地握紧了拳头。

I spoke through clenched teeth .

我曾从咬紧的牙齿。

I clenched my fist and hit him .

我攥紧拳头向他击去。

He said valiantly through clenched teeth .

他说，通过咬紧牙关勇敢。