slowdown

n.放慢，迟缓

slothful, slothfully, slothfulness, slouch, slouch hat, slouching, slouchingly, slough, sloven, slovenliness, slovenly, slow, slow down, slow lane, slow motion, slow up, slow-down, slow-witted, slow-worm, slowcoach (Brit) (US `slowpoke), slowly, slowness, SLR, sludge, slue, slug, sluggard, sluggish, sluggishly, sluggishness, sluice, slum, slumber, slumberer, slumberous, slummy, slump, slung, slunk, slur,