up to

US /ʌp tə/
UK /ʌp tə/
"up to" picture
1.

在干什么, 图谋

doing something, especially something bad

:
What are you up to?
在干什么
I wonder what those kids are up to.
我想知道那些孩子在干什么
2.

取决于, 由...负责

responsible for something

:
It's up to you to decide.
取决于你来决定。
It's up to the manager to approve the request.
取决于经理批准请求。
3.

直到, 达到

as far as; until

:
The water came up to my knees.
了我的膝盖。
The store is open up to 9 PM.
商店营业晚上9点。
4.

胜任, 能够

equal to; capable of

:
He's not up to the task.
他无法胜任这项任务。
Are you up to a game of chess?
玩一盘国际象棋吗?