ahead of time

US /əˈhɛd əv taɪm/
UK /əˈhɛd əv taɪm/
"ahead of time" picture
1.

提前, 预先

before the scheduled or expected time

:
We arrived at the airport an hour ahead of time.
我们提前一小时到达机场。
It's always good to prepare your presentation slides ahead of time.
提前准备好演示文稿幻灯片总是好的。