She is cmp3ming for tomorrow's exam.

她正为明天的考试而临急抱佛脚。

cmp3本指塞满，在口语中cmp3也有为应考而死记硬背，为某个考试而死记硬背是用介词for.

He cmp3med this clothe into the small box.

他把衣服塞进那小箱子里。