fill in
US /fɪl ɪn/
UK /fɪl ɪn/

短语动词
1.
2.
3.
替补, 代替
to act as a substitute for someone who is absent
示例:
•
I'm happy to fill in for you while you're on vacation.
你度假期间,我很乐意替补你的位置。
•
She had to fill in for the absent teacher.
她不得不代替缺席的老师。
在 Lingoland 学习这个单词