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-dip mining俯斜开采Downslope tillage顺坡耕作down-link noise下行链路噪声down-draft kiln倒焰窑downbeat forecast降低预期目标down cutting tool立刨刀down-cut shears下切式剪切机downhand position平焊位置down-to-earthadj.实际的；谦逊的down-hole tools井下工具