two
/tuː/cardinal number
1- equivalent to the product of one and one; one less than three;2两, 二; 两个：
two years ago
两年前
a romantic weekend for two in Paris
二人周末巴黎浪漫之旅
two of Amy's friends.
埃米的两个朋友。
(Roman numeral: ii or Ⅱ. 罗马数字： ii 或Ⅱ.)
1.1
- a group or unit of two people or things两个（人或物）一组：
they would straggle home in ones and twos.
他们会三三两两分散回家。
1.2
- two years old两岁：
he is only two.
他才两岁。
1.3
- two o'clock两点钟：
the pub closed at two.
酒吧两点钟关的门。
1.4
- a size of garment or other merchandise denoted by two2号尺码的衣物。
1.5
- a playing card or domino with two pips2点的纸牌; 2点的多米诺骨牌。
短语
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
- 见PENNY.
in two
- in or into two halves or pieces（分成）两半, 两部分：
he tore the piece of paper in two.
他把纸撕成两半。
in two shakes （of a lamb's tail）
- 见SHAKE.
it takes two to tango
- 见TANGO1.
put two and two together
1
- draw an obvious conclusion from what is known or evident根据现有事实推断, 综合一切判断。
1.1
put two and two together and make five
draw a plausible but incorrect conclusion from what is known or evident得出似是似非的结论。
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。
词源
Old English twā (feminine and neuter) of Germanic origin: related to Dutch twee and German zwei, from an Indo-European root shared by Latin and Greek duo. Compare with TWAIN.