at-once

常见例句

It is necessary that he be sent there at once.
有必要马上派他到那里去。
Such evil practice cannot be swept away at once.
这种坏事不是一下能扫除干净的。
The teacher asked the pupils not to speak at once.
老师叫学生们不要同时说话。
At once he slew him and set Io free.
他立刻杀死了阿尔戈斯，放掉了伊俄。
Go at once, or I will unleash my dog on you!
立刻走，要不我就放我的狗咬你！
The film is at once humorous and moving.
这部电影既幽默又动人。