He grimaced at the bitter taste.

他一尝那苦味，做了个怪相。

She grimaced as the needle went in.

针扎进去痛得她龇牙咧嘴。

He grimaced and looked narrowly at his colleague.

他做了个鬼脸，然后仔细地看着同事。

She started to sit up, grimaced, and sank back weakly against the pillow.

她开始坐起来，痛苦地皱着脸，又虚弱地靠回到枕头上。

He grimaced slightly, obviously expecting no answer to his rhetorical question.

他稍稍做了个苦相，显然并不指望对他的修辞性设问有所回答。