我要抓紧机会去跟她说话。

Wǒ yào zhuājǐn jīhuì qù gēn tā shuōhuà.

I want to seize the chance to talk to her.

在自动扶梯上要抓紧扶手。

Zài zìdòng fútī shàng yào zhuājǐn fúshǒu.

Hold on tight to the handrail on the escalator.

考试快到了，抓紧复习吧。

Kǎoshì kuài dàole, zhuājǐn fùxí ba.

The exam is approaching, so make good use of time to review.