dual.

常见例句

The road opened out into a dual carriageway.
這條路已擴展成了複式車行道。
His dual role as a composer and a conductor made him very busy.
他作曲家和指揮家的雙重身份使他非常繁忙。
At that point, the road opens out and becomes a dual carriageway.
公路在那個地方變寬了，變成了雙車道。
The training airplane has dual controls.
教練飛機有兩套控制系統。
Dual function design saves money and space.
二郃一設計可節省成本及空間。
But it too had a dual character.
但是它也有二重性。