drop sth into sth 把什么滴入什么里面
drop one's voice 把声音放低
drop sb a line 给某人写信
take a drop 喝一杯
take one's drop 狂饮
drop across 偶遇
drop away 离去
drop back 退后
drop behind 落伍 落后
drop dead 暴死 倒毙
drop down 落下来
drop in 顺便走访
drop off 一个一个地（离去）
drop to 下降到,跌到