in
US /ɪn/
UK /ɪn/

介词
1.
2.
在...期间, 于
expressing a period of time during which an event takes place or a situation continues
示例:
•
I'll call you in the morning.
我会在早上打电话给你。
•
The project will be completed in two weeks.
项目将在两周内完成。
副词
形容词
在 Lingoland 学习这个单词