在《PONS词典》中的词汇
jam up 动词 trans
1. jam up (fix in position):
| I | jam up | |
|---|---|---|
| you | jam up | |
| he/she/it | jams up | |
| we | jam up | |
| you | jam up | |
| they | jam up |
| I | jammed up | |
|---|---|---|
| you | jammed up | |
| he/she/it | jammed up | |
| we | jammed up | |
| you | jammed up | |
| they | jammed up |
| I | have | jammed up | |
|---|---|---|---|
| you | have | jammed up | |
| he/she/it | has | jammed up | |
| we | have | jammed up | |
| you | have | jammed up | |
| they | have | jammed up |
| I | had | jammed up | |
|---|---|---|---|
| you | had | jammed up | |
| he/she/it | had | jammed up | |
| we | had | jammed up | |
| you | had | jammed up | |
| they | had | jammed up |