double egg二重卵, 卵中卵doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double criminality双重罪double budded tree双重芽接树double block valve双隔断阀double U interface双U口double channel RDC双路RDCdouble decker oven双层炉double the bandage把绷带对折double span tunnel连拱隧道double-sided bed双面冷床double edged knife双刃刀