in
US /ɪn/
UK /ɪn/

1.
2.
在...期间, 于
expressing a period of time during which an event takes place or a situation continues
:
•
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。
在...期间, 于
expressing a period of time during which an event takes place or a situation continues