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。