Learn A Phrase: Crop Up

來源: 於 2014-03-08 16:34:30 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

After reading the interesting post by eRandom about the two-letter word "up", I noticed that the phrase "crop up" is not included. Do you know what it means to "crop up"?
 

Surfer_Diver
2014.3.8