您要查找的是不是：
- one encryption at once 一次性加密
- At least one encryption method must be specified. 至少要指定一个加密方式。
- 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。
- We should not try to accomplish two tasks at once. 我们不能指望同时完成两件工作。
- I tell you to stop talking at once. 我叫你们立刻停止说话。
- She fell in with my idea at once. 她立即同意了我的意见。
- He stopped playing the piano at once. 他立刻停止了弹钢琴。
- Please square up and come back at once. 请立即结清帐目回来。
- All at once, a rabbit came out of a hole. 突然，一只兔子从一个洞中跑了出来。
- We determined to go to the railway station at once. 我们决定立刻去火车站。
- When I gave him the chance, he grabbed it at once. 我给他这一机会，他立刻抓住不放。
- Why do I appear in more than one place at once? 为什么我能同时出现在多于一个地方?
- Don't pass me all the books at once, one at a time. 不要把书一次性全递给我,每次递一本。
- You must set about your work at once. 你必须立即开始工作。
- I can't be in two places at once. 我分身乏术。
