动词 drop by:

1. visit informally and spontaneously

Dropol德罗波尔dropvt.落下；跌倒；下降；放弃；漏掉；断绝关系n.滴；微量；减少；滴状物Droperidol fentanyl芬氟合剂drop-away current脱扣电流drop thermal system热力系统drop-tube furnace滴管炉drop shot technique扣球技术drop in on a friend偶然走访朋友Drop by any time.随时欢迎您光临。Drop out of society隐退drop-shaft sinking沉井法drop-down function降落函数