1·The piece of furniture serves a dual purpose as a cupboard and as a table.
这件家具有两个用途，既作橱柜也作饭桌。
—— 《牛津词典》
2·The Book of Revelation seems to have a dual purpose.
《启示录》似乎有双重目的。
3·The dual purpose of a security guard is prevention and protection.
保安的两个作用是预防和保护。
4·Software development projects must satisfy a dual purpose for your company.
软件开发项目必须满足双重目标。
5·Water/oil dual purpose mmachine can use either water or oil heating medium.
可根据需要任意选择以水或热媒油当传热介质。
6·When power is lost, manual & electric dual purpose elevator can also be used.
手电两用升降机无电时也能使用。
7·News media serves a dual purpose in emergency handling process of crisis event of public security.
新闻媒介在公共安全危机事件应急处置过程中的作用具有双重性。
8·It also serves the dual purpose of providing the MIME type when a file's content is being sent to the browser.
它还有一个作用，那就是在将文件内容发送给浏览器时提供MIME类型。
9·To investigate the effect and safety of the unicameral dual purpose tracheal catheter in esophagus operations.
目的研究单腔两用气管导管（新型导管）在开胸术中通气效果及安全性。
10·New kinds of LED lighting technology are invading retail stores with a dual purpose: saving energy and luring shoppers.
新型LED技术入侵零售商店有双重目的：节省能源和诱惑顾客。