adj. 有两部分的，双重的；两倍的
adv. 双重地，两倍地
1.The material also has small spheres of porous silicon embedded in it. Their function is twofold.
该材料内嵌入小多孔硅球体，有双重作用。
2.The benefit is twofold: you won't have the annoyance or the additional heat that comes with ironing.
这种做法的好处是双重的：你不会因为要熨烫衣物而造成额外的烦恼和热量。
3.The purpose of such a review is twofold.
进行该检查的目的是双重的。
4.The intent of this restriction was twofold.
这种限制的意图是双重的。
5.The downside to this approach is twofold.
这种做法的缺点有两个。
6.Their findings are twofold.
他们的发现有两个部分。
7.Becoming a Child of Nature: It's a Twofold Task of Parents and children.
做大自然的孩子——父母与孩子双方的任务。