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upon [美 əˈpɑn, 英 əˈpɒn] 介词 书
1. upon (on):
2. upon (indicating imminent or unexpected arrival):
在《PONS词典》中的词汇
refine [rɪˈfaɪn] 动词 trans
2. refine technique:
upon [əˈpɒn, 美 -ˈpɑ:n] 介词 书
refine [rɪ·ˈfaɪn] 动词 trans
2. refine technique:
upon [ə·ˈpan] 介词 书
| I | refine |
|---|---|
| you | refine |
| he/she/it | refines |
| we | refine |
| you | refine |
| they | refine |
| I | refined |
|---|---|
| you | refined |
| he/she/it | refined |
| we | refined |
| you | refined |
| they | refined |
| I | have | refined |
|---|---|---|
| you | have | refined |
| he/she/it | has | refined |
| we | have | refined |
| you | have | refined |
| they | have | refined |
| I | had | refined |
|---|---|---|
| you | had | refined |
| he/she/it | had | refined |
| we | had | refined |
| you | had | refined |
| they | had | refined |