| I | furrow |
|---|---|
| you | furrow |
| he/she/it | furrows |
| we | furrow |
| you | furrow |
| they | furrow |
| I | furrowed |
|---|---|
| you | furrowed |
| he/she/it | furrowed |
| we | furrowed |
| you | furrowed |
| they | furrowed |
| I | have | furrowed |
|---|---|---|
| you | have | furrowed |
| he/she/it | has | furrowed |
| we | have | furrowed |
| you | have | furrowed |
| they | have | furrowed |
| I | had | furrowed |
|---|---|---|
| you | had | furrowed |
| he/she/it | had | furrowed |
| we | had | furrowed |
| you | had | furrowed |
| they | had | furrowed |
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单语范例（未经PONS编辑处理）
The central raised area of the cephalon, called the glabella, is strongly divided by two deep furrows that merge when crossing the midline.
en.wikipedia.org A furrow develops across the disc and the animal divides into two halves.
en.wikipedia.org Another tooth, perhaps a third lower molariform, has two furrows on one side and three infundibula on the other.
en.wikipedia.org The upper, spore-bearing surface (hymenium) is smooth and opaque, but is frequently furrowed and folded.
en.wikipedia.org There are short but deep furrows at the corners of the mouth on both jaws.
en.wikipedia.org