第2个回答 2013-09-21
double
(形容词)
Twice as much in size, strength, number, or amount:
两倍的,双倍的:大小、力量或数量上两倍的:
a double dose.
两倍的剂量
Composed of two like parts:
双层的:两个相同部分组成的双层的:
double doors.
双层门
pair
n.(名词)
【复数】 pair 或 pairs 缩写 pr.
Two corresponding persons or items, similar in form or function and matched or associated:
一对:相对应的两人或物,在样式或功能上相似并相配或相联系:
a pair of shoes.
一双鞋
One object composed of two joined, similar parts that are dependent upon each other:
一副:由相互依存的两个相连或类似部分组成的物件:
a pair of pliers.
一把钳子
several几个的意思,有可能超过2个