a —— or two (或 two or three ——)

used to denote a small but unspecified number

一两（个）

a minute or two had passed.

一两分钟过去了。

be two a penny

a minute or two had passed.

一两分钟过去了。

in two shakes (of a lamb's tail)

a minute or two had passed.

一两分钟过去了。

it takes two to tango

a minute or two had passed.

一两分钟过去了。

put two and two together

draw an obvious conclusion from what is known or evident

根据现有事实推断，综合一切判断

that makes two of us

one is in the same position or holds the same opinion as the previous speaker

我也是如此，对我同样适应

‘I haven't a clue!’ ‘That makes two of us.’.

“我没有任何线索！”“我也一样。”。

two by two (或 two and two)

side by side in pairs

成双成对地，双双对对地

two can play at that game

used to assert that another person's bad behaviour can be copied to that person's disadvantage

（表示要报复）这一套我也会

two's company, three's a crowd

used to indicate that two people, especially lovers, should be left alone together

两人成伴，三人不欢

two heads are better than one

(proverb)it's helpful to have the advice or opinion of a second person

(谚)两人智慧胜一人

in two

Into two separate parts; in half

分成两个部分；分成两半

cut the sandwich in two.

把三明治切成两半