pairs

1.the fore and hind pairs of wings.

前翼和后翼。

2.three pairs of little piggy eyes.

三双小猪眼。

3.three pairs of valvular apertures.

三对气门开口。

4.Two pairs of socks are enough.

两双短袜足够了。

5.The two pairs of trousers are mine.

这两条裤子是我的。

6.I have two pairs of pajamas.

我有两套睡衣裤。

7.the girls walked in pairs or fours.

女孩子们或两人或四人一走。

8.students work alone or in pairs .

学生独立学习或两人一学习。

9.76 pairs of red kites.

76对红鸢。

10.Students worked in pairs on the project.

学生两人一做这个项目。

11.There were 13~14 pairs of costae.

肋为13~14对，其中，胸骨肋为8对。

12.Two more pairs of trousers are dirty.

另外两条裤子脏了。

13.Pairs of socks are pinned together.

成双的袜子是别在一起的。

14.the diagnostic character of having not one but two pairs of antennae.

有两对触角而非一对触角的属性特征。

15.would you have her dragged up by a succession of au pairs?.

难道你愿意让一个接一个的寄住妇女把她胡乱拉扯大？。

16.For reasons best known to himself, he wears three pairs of socks.

谁都猜不透他为什么要穿三双袜子。

17.Blood pressure 108, arrack are 798 pairs of bodies harmful?

血压一百，两对身体有害吗？

18.The binary operations in that ring have as domain ordered pairs of functions, and as codomain functions.

因此定义域和对映域是函数一开始就确定的强制约束。

19.The way the stamps were printed resulted in tete-beche pairs in these stamps.

由于印刷方式原因，在芬兰的第一套邮票中出现了对倒的连票。

20.usually 2 pairs of homogamous spikelets at base of both lower and upper raceme of pair;

通常对的更更低和上面的总状花序的2对同性花的小穗在基部；