查询结果:

adj. 两倍的,有两部分的;双重的
adv. 两倍地;双重地

拆分: two二 + -fold形容词或副词词尾,多少倍 

例:
adj.
a twofold rise in prices 价格上涨一倍 
a twofold increase in the risk. 风险增加两倍。 
the twofold demands of the business and motherhood. 干事业和做母亲的双重压力。 
adv. 
Usage rate increased more than twofold from 1979 to 1989.    1979∼1989年间利用率增长超过两倍。