twofold
adj. <书>由两部分组成的,有两部分的; 两倍的
You can use twofold to introduce a topic that has two equally important parts.
The case against is twofold: too risky and too expensive.
反对理由有两点:太冒险而且太昂贵。
1. having more than one decidedly dissimilar aspects or qualities;
2. twice as great or many;
1. by a factor of two;
The city's population density has grown twofold over the last ten years.
城市的人口密度已经在过去十年增加了两倍.
The radiative effect of increased cloud is twofold.
云的增加对辐射有两方面的影响.
The office of a clergyman is twofold; public preaching and private influence.
牧师的职责是双重的: 公众讲道和个人感化.
The case for doing more is twofold.
广告采取更多措施有一石两鸟的作用.
The price of TVs are twofold down over these years.
近几年来,电视机的价格下降了两倍.