Definition: suddenly Level: C1
突然间，他站起来走出了房间。
___All ___at ___once, he stood up and walked out of the room.
突然间，一切又开始正常运作了。
___All ___at ___once, everything started to work again.
突然间，她意识到了事情的真相。
___All ___at ___once, she realized the truth of the matter.
