单词two-folds-
Either of two folds of skin and muscle that can be closed over the exposed portion of the eyeball.
眼睑两个对折的皮和肌肉，能合上盖上眼球的裸露的部分他的眼球一动不动。
Did you know that when you help someone, the help is returned in two folds?
当你帮助别人，这个帮助会双倍奉还给你？
The benefit with focused approach is two-folds.
和焦点所在的方式利益是二-折层。