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1·What insects have one pair of wings? What insects have two pairs of wings?

什么昆虫有一对翅膀，什么昆虫有二对翅膀？

2·Seriously, I only have one pair of shoes because I only have one pair of feet.

说真的，我只有一双鞋，因为我只有一双脚。

3·You only have one pair of eyes so take care of them.

眼睛只有一双，所以要保护好眼睛。

4·One pair of heavy black shoes.

一双黑色加强鞋。

5·Not one pair – but several.

不是一条——是几条。

6·One pair was observed raising a fourth.

曾经还观察到一对翠鸟生育了第四窝。

7·Because you know the energy of one pair.

因为你们知道一对的能量。

8·Owns at least one pair of black lace-up shoes.

至少有一双黑系带鞋。

9·They are similar, but one pair has diamante on it.

眼镜比较相似，但是其中一副镶有金箔。

10·If there are four different faces, there is one pair.

如果有四张不同的牌面，则有一对。

一对

1·One pair was observed raising a fourth.

曾经还观察到一对翠鸟生育了第四窝。

2·If there are four different faces, there is one pair.

如果有四张不同的牌面，则有一对。

3·You cannot have more than one pair inside the container.

您在容器中至多可以有一对。

4·The Listing 7 cxf-client.xml defines two pairs of properties file and usernames, one pair for use in signature processing and the other for use in encryption processing.

清单 7 所示的 cxf-client.xml 定义了两对属性文件和用户名，一对用于签名处理，另一对用于加密处理。

5·We start with one pair of newly born rabbits.

我们从有一对初生的小兔开始。