“双重目的”可以翻译为 "dual purpose" 或 "double purpose"。其中,“dual purpose”更为常用和正式,强调同时具备两种不同的功能或目标。例如:
This product serves a dual purpose—it can be used for cooking and also as a storage container.(这个产品有双重用途——既可以用于烹饪,也可以作为储物容器。)