“once”什么意思

once
KK: []
DJ: []
ad.
1. 一次,一回
I see them once every two months.
我每两个月与他们见一次面。
2. 昔日,曾经
He once knew her, but they are no longer friends.
他以前认识她,但他们已经不是朋友了。
n.
1. 一次,一回
Once is enough.
一次就够了。
conj.
1. 一旦,一经...便
Once you get into a bad habit, you'll find it hard to get out of it.
一旦染上坏习惯,想改掉就难了。

一次,从前,一旦

一次，一旦，曾经

放心，肯定对的