his dual role as composer and conductor
他兼任作曲家和指挥的双重角色
She has dual nationality(= is a citizen of two different countries) .
她具有双重国籍。
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。
1.二的;二重的;二体的;二元的
1.【数】对偶;【语】双数
1.used about things that have two similar aspects, parts, or functions; someone who has dual nationality or dual citizenship has the legal right to be a citizen of two particular countries
1.Starting with the Atrix, we're beginning to see Android phones sport dual core processors that can offer amazing speed for your phone.
在Atrix之后，我们将可以看到更多的Android手机使用双核处理器为你的手机提供惊人的处理速度。
2.All the time the dual working of my mind distracted me almost to the point of insanity.
我脑中那种有双重存在在活动的感觉一直折磨着我，几乎使我神经错乱。
3.Written with his close collaborator, Christopher Bartlett, the article argued that this dual reporting leads to "conflict and confusion" .
这篇和他的亲密同伴克里斯托弗.巴特勒特联名撰写的研究报告指出，这种双向汇报模式会导致“矛盾和疑惑”。
4.There is no doubt (in my mind, at any rate) that Linux on the desktop would not currently be as popular if dual-booting were impossible.
毫无疑问（至少我这样认为），如果不能实现双引导，桌面上的Linux将不会像现在这样流行。
5.From the point of view of philosophy, this article conceives of a new library-running pattern in which readers have dual roles and statuses.
在这个模式中，读者具有双重角色和双重地位，改变了图书馆对读者的绝对管理，读者地位得到进一步提高。
6.The server is a singleton object that has its own dual interface as well as a dispatch interface used for firing off events.
服务器是一个singleton对象，它具有自己的双重接口和一个用于引发事件的调度接口。使用。
7.Lack of challenge in their work role appeared to be a positive characteristic for dual-earner fathers.
缺乏的挑战，在其工作中的作用似乎是一对双职工父亲积极特征。
8.At least you can set it up to use the whole disk with no worry about dual booting.
而且你可以把整个硬盘用以进行安装，而不用去考虑双引导的问题。
9.Phones next year will have dual-core processors, super-fast data connections, and graphics power rivaling that of the original Xbox.
明年的电话将配备双核处理器，超快的数据链接并且图像处理能力足以媲美原来的xbox。
10.Both cameras should be set perpendicular to the surface being photographed, using a heavy-duty tripod with a dual-head support.
双方相机应设置垂直表面上正对着你想拍摄，使用重型三脚架与双首长的支持。