知识扩展
词组短语 dual function双重职能；dual role双重角色

中文词源： dual 双重的 来自拉丁语duo, 二，词源同two. dual
精选例句

常见考点例句：

Less than half the countries in africa condone dual citizenship .

非洲只有不到一半的国家容忍双重国籍。

It also came with a dual led flash which certainly helped .

它也带来了双led闪光灯，这当然有帮助。

It has kind of a dual role .

它扮演着一种双重角色。

This dual approach has worked remarkably well .

这种双重模式运作得相当出色。

The viking dual ability is handy .

维京双重能力是便利的。