Downeyn.唐尼
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
downbound exit下行(水)出闸时间
down-warping下降拗折
down in London南下去伦敦
Down's syndrom文献评价
down the tubes处于失败情况;完蛋
down-counter逐减计数器
down-payment分期付款的首笔付款
downhole motor螺杆钻具
down path band下行线路波段