doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份doublepassadj.双程的double tax双重税double fan双风扇,二联通风机doublelaneadj.双车道的doubleknitadj.双面针织的double PCR双重PCRDouble-E达宝易doublegateadj.双闸门的(双选通的)doublestubn.双截线(双短线)double busn.双重母线(双汇流排)