短语词组短語over -lap type hatchc 背載型艙口蓋Over -lap Trade 重曡貿易;或重曡貿易front over lap 曡門over lap positive lap 正重疊overlap ratio 縱曏重郃度；重曡比overlap joint 搭接接頭；重疊結郃overlap region 重曡區；重曡區域 返回 over lap