相关单词近义词 canal 运河, channel 频道, pipe 管子, tube 管子, vessel 容器, conduit 导管, vent 排气口, outlet 出路临近词ductile, duckling, ductus, ducted, ducter, ductin, ductor, Ducteil, ducting, ductoma, duction, ductube 返回 ducts