Downlen.唐尔
downadv.向下prep.沿着 ... 而下adj.向下的;消沉的;无礼的n.绒毛;汗毛v.击倒;打败;吞下;被抑制
down a government推翻政府
downbearing edema玄水, 悬水
down scroll arrow下滚箭头
Down-converters下变频器
down-feed screw垂直丝杠
down biting curet下咬型刮匙
downslide surface下滑面
down-hole robot井下机器人
down price clause减价契约条款
down in the mouth沮丧的; 忧郁的; 心灰意懒的