Once the rain stops, we can go outside.
As soon as; when.
I only saw that movie once.
A single occurrence or instance of something.
I once lived in a small town.
At one time; on one occasion.
She once visited Paris.
He once dreamed of flying.
We once ate there.
once upon a time
just once
once in a while
formerly
previously
before
強力な無料の画像辞書とフラッシュカード付き。