http://www.pons.de/produkte/3-12-517841-X/(牛津大学出版社授权产品)
 
  
 I. drone [美 droʊn, 英 drəʊn] 名词
2.1. drone U (sound):
在《PONS词典》中的词汇
 
  
 I. drone [drəʊn, 美 droʊn] 名词 无复数
 
  
 I. drone [droʊn] 名词
| I | drone | 
|---|---|
| you | drone | 
| he/she/it | drones | 
| we | drone | 
| you | drone | 
| they | drone | 
| I | droned | 
|---|---|
| you | droned | 
| he/she/it | droned | 
| we | droned | 
| you | droned | 
| they | droned | 
| I | have | droned | 
|---|---|---|
| you | have | droned | 
| he/she/it | has | droned | 
| we | have | droned | 
| you | have | droned | 
| they | have | droned | 
| I | had | droned | 
|---|---|---|
| you | had | droned | 
| he/she/it | had | droned | 
| we | had | droned | 
| you | had | droned | 
| they | had | droned | 
 
  
 