adj.双重的；成双的
n.双数
His dual role as a composer and a conductor made him very busy. 他作曲家和指挥家的双重身份使他非常繁忙。
The car has dual exhaust pipes. 这车有双排气管。
adj.逐渐的；逐步的；平缓的
adj.单独的；一个人的；独有的
n.个人；个体
adv.逐渐地
个人
n.个人主义
adj.剩余的；残余的
n.剩余部分；(复)追加酬金
