adj.两倍的;成双的;双重的;连续两个的;供两人用的;
adv.成双地;
v.(使)加倍;击出二垒安打;对折;
n.两倍;酷似的人;双份的酒;双人房;
例句:
Mary agreed to double the part of the dancer and the mother.
玛丽同意扮演舞女和母亲两个角色.
Inflation is in double figures .
通货膨胀率达两位数。
I paid only £2 for this old book and Mr. Smith offered me double for it.
我仅花两英磅买了这本旧书,史密斯先生愿加倍付钱向我购买.