[I, Ipr, Ip, Tn, Tn.pr, Tn.p] ~ (sth) (up/down) (cause sth to) go at a slower speed （使某事物）缓行, 减速: The train slowed (down) (to a crawl) as it approached the station. 火车进站时慢了下来. * Output has slowed (up) a little. 生产已放慢了一点. * She slowed the car down and stopped. 她把汽车速度减慢後停了下来. * Lack of demand will slow (down) our economic growth. 市场需求低就要拖慢我们的经济增长速度. 
(phr v) slow up/down work less energetically 松弛下来: Slow up a bit, or you'll make yourself ill. 别这麽卖力气, 不然你要累出病来的.# `slow-down n reduction of activity, esp a deliberatereduction of industrial production by workers or employers生产放慢（尤指工人或雇主有目的的）: a slow-down in the dairy industry 奶制品工业的生产放慢.