n. 1.四人小组；(套在车上的)四匹马。 2.四的记号；(骰子的)四点；(钟点的)四时；四岁。 3.〔pl.〕 四厘公债。 4.(口)四桨小艇；四桨小艇艇员；〔pl.〕四桨小艇竞赛。 5.〔pl.〕 【军事】四路纵队。 6.〔pl.〕【机械工程】四汽缸发动机；四汽缸汽车。 短语和例子 a column of fours 四路纵队。 a child of four 四岁的孩子。 four-and-twenty ＝ twenty-four 二十四。 a coach and four 四匹马拉的大马车。 Form fours ! 〔口令〕排成四列纵队! Fours right [left]! (口令)排成四列向右[左]转! in fours 1. 每组[批]四个。 2. 一柄四叶。 on all fours 1. 匍匐，爬着。 2. 完全一致的，完全吻合的(No simile runs on all fours. 任何比喻都有出入)。
a playing card or domino or die whose upward face shows four pips 同义词：four-spot,
the cardinal number that is the sum of three and one 同义词：4, IV, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe,
being one more than three 同义词：4, iv,
例句与用法
1.
There are at present four television channels . 现在有四个电视频道。
2.
There are four items on the agenda of the meeting . 会议有四项议程。
3.
Nine minus four is five . take four from nine is five . 九减四得五。
4.
These four causes do not operate singly . 这四个原因并不单个起作用。
5.
They drew as many as four times that year . 他们那一年四次打成平局。
6.
You will need an injection every four hours . 你要每隔四小时打一针。
7.
I'll tend to you four in the morning ! 等我明儿早晨来打发你们四个罢！
8.
These four vitamins act in coenzymes . 这四种维生素在辅酶中起作用。
9.
The ship had left lisbon four days earlier . 轮船四日前已驶离里斯本。
10.
He has been to the four corners of the country . 他已到过全国各地。
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