 
  
 I. tum·ble [ˈtʌmbl̩] 动词 不及物动词
2. tumble (rush):
I. tumble down 动词 不及物动词
tumble down building:
II. tumble down 动词 trans
-  
-  etw hinabstürzen
I. tumble over 动词 不及物动词
ˈrough-and-tum·ble 形 attr, 不变的
| I | tumble | 
|---|---|
| you | tumble | 
| he/she/it | tumbles | 
| we | tumble | 
| you | tumble | 
| they | tumble | 
| I | tumbled | 
|---|---|
| you | tumbled | 
| he/she/it | tumbled | 
| we | tumbled | 
| you | tumbled | 
| they | tumbled | 
| I | have | tumbled | 
|---|---|---|
| you | have | tumbled | 
| he/she/it | has | tumbled | 
| we | have | tumbled | 
| you | have | tumbled | 
| they | have | tumbled | 
| I | had | tumbled | 
|---|---|---|
| you | had | tumbled | 
| he/she/it | had | tumbled | 
| we | had | tumbled | 
| you | had | tumbled | 
| they | had | tumbled | 
 
  
 