| I | flatten |
|---|---|
| you | flatten |
| he/she/it | flattens |
| we | flatten |
| you | flatten |
| they | flatten |
| I | flattened |
|---|---|
| you | flattened |
| he/she/it | flattened |
| we | flattened |
| you | flattened |
| they | flattened |
| I | have | flattened |
|---|---|---|
| you | have | flattened |
| he/she/it | has | flattened |
| we | have | flattened |
| you | have | flattened |
| they | have | flattened |
| I | had | flattened |
|---|---|---|
| you | had | flattened |
| he/she/it | had | flattened |
| we | had | flattened |
| you | had | flattened |
| they | had | flattened |
无例句可用
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单语范例（未经PONS编辑处理）
For this purpose, the island first had to be flattened and reshaped.
en.wikipedia.org The maxillary teeth are flattened with denticles on their trailing edges.
en.wikipedia.org From a lateral view their body is flattened but some have a round truncate.
en.wikipedia.org This mussel has a somewhat flattened, smooth, oval shell which is thin in young animals and becomes thicker with age.
en.wikipedia.org Production starts off slowly, rises faster and faster, then slows down and flattens until it reaches a peak.
en.wikipedia.org