It's about time

US /ɪts əˈbaʊt taɪm/
UK /ɪts əˈbaʊt taɪm/
"It's about time" picture
1.

是时候了, 早就该了

used to say that something should have happened sooner or that it is already late

:
It's about time you cleaned your room!
是时候了,你该打扫房间了!
After waiting for an hour, it's about time the bus arrived.
等了一个小时,是时候了,公交车该来了。