one and all

1. 全部

I would like to thank you, one and all.

我要谢谢你们, 谢谢你们大家。

one by one

1. 一个一个地

One by one the lights went out.

灯一盏盏地熄了。

one or two

1. 一两个; 很少的

I shall be away only one or two days.

我一两天后就回来。

all one

1. 都一样

I don't mind which we do; it's all one to me.

我们做哪一样都无所谓, 对我来说没有区别。

be at one

1. 一致

I'm at one with you on that point.

在那点上我和你是一致的。

by ones and twos

1. 三三两两地

People began to leave the meeting by ones and twos.

人们开始三三两两地离开了会场。

(all) in one

1. 合为一体

She's President and Prime Minister in one.

她一人身兼总统及首相二职。