[countable, usually singular] a fall or reduction in the amount, level or number of sth下降；下跌；减少◆The airline has seen a steep drop in ticket sales.这家航空公司的机票销售量急剧减少。◆Manufacturing activity showed a drop of 1.2% in July.生产活动七月份减少了 1.2%。◆a 15% drop in profits15% 的利润下降⨁a big / dramatic / large / sharp / slight / steep drop大跌；急剧／大幅度／急剧／轻微／突然下降 ⨁ to expect / forecast / report / suffer a drop (in sth)预计／预测／报告／遭受（某方面的）下跌 leaflet drop