http://www.pons.de/produkte/3-12-517841-X/(牛津大学出版社授权产品)
I. crop [美 krɑp, 英 krɒp] 名词
II. crop <现在分词 cropping; pt, past part cropped> [美 krɑp, 英 krɒp] 动词 trans
III. crop <现在分词 cropping; pt, past part cropped> [美 krɑp, 英 krɒp] 动词 不及物动词 农业
-  crop
-  
root crop 名词
-  root crop
-  
crop up 动词 [美 krɑp -, 英 krɒp -] (v + adv)
2. crop up (occur, present itself):
在《PONS词典》中的词汇
| I | crop | 
|---|---|
| you | crop | 
| he/she/it | crops | 
| we | crop | 
| you | crop | 
| they | crop | 
| I | cropped | 
|---|---|
| you | cropped | 
| he/she/it | cropped | 
| we | cropped | 
| you | cropped | 
| they | cropped | 
| I | have | cropped | 
|---|---|---|
| you | have | cropped | 
| he/she/it | has | cropped | 
| we | have | cropped | 
| you | have | cropped | 
| they | have | cropped | 
| I | had | cropped | 
|---|---|---|
| you | had | cropped | 
| he/she/it | had | cropped | 
| we | had | cropped | 
| you | had | cropped | 
| they | had | cropped | 
 
  
  
  
 