two-fold

基本解释

Using the pseudonyms has a two-fold purpose.
她们使用假名有着双重的目的。
In this case, you have repeating elements within repeating elements, so the aggregation is two-fold and nested.
在本例中，重复的元素中包含重复元素，所以聚合是双重的和嵌套的。
The problem with quakes in the central or eastern US is two-fold: Seismic waves travel farther in the colder, older crust under that part of the country, so the damage can be more widespread.
美国中部及东部的遇到的有关地震的问题是双重的：地震波在这部分古老而寒冷的地面上传播的较快，所以危害传播得更广。

And again,it is two-fold: one is,we want to help our colleagues in Mexico, but it does have an impact on safety and security in the United States."
What I though I'd do is just tease you with some visuals if you haven't gotten to the point of playing with the staff solution so the themes of problem set 3 are two-fold.
如果你们还没达到使用解决方案的程度,那现在我能做的就是用一些图形为你们梳理一下,习题集3的主题,是两方面的。
哈佛公开课 - 计算机科学课程节选
Plato's critique of Homeric poetry in the Republic is two-fold; it is both theological and political.
柏拉图在《理想国》中,批评荷马诗学有两层含意;,同时是有关神学与政治学。
耶鲁公开课 - 政治哲学导论课程节选

"This two-fold increased risk went away when we looked only at women who breast-fed, " Ursin says.
NPR: Study: Breast-Feeding Decreases Cancer Risk