| I | darken |
|---|---|
| you | darken |
| he/she/it | darkens |
| we | darken |
| you | darken |
| they | darken |
| I | darkened |
|---|---|
| you | darkened |
| he/she/it | darkened |
| we | darkened |
| you | darkened |
| they | darkened |
| I | have | darkened |
|---|---|---|
| you | have | darkened |
| he/she/it | has | darkened |
| we | have | darkened |
| you | have | darkened |
| they | have | darkened |
| I | had | darkened |
|---|---|---|
| you | had | darkened |
| he/she/it | had | darkened |
| we | had | darkened |
| you | had | darkened |
| they | had | darkened |
无例句可用
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单语范例（未经PONS编辑处理）
Next, extra exposure is given to the area or areas that need to be darkened.
en.wikipedia.org This technique prevents the muddiness or darkening that result when patches of colour actually run into each other.
en.wikipedia.org Other species may also be fumed but usually will not darken as much as white oak.
en.wikipedia.org The inner satellites around the other planets may have been darkened by space weathering.
en.wikipedia.org When the preview segments ended, the tuning would be silenced and the stage darkened for several seconds.
en.wikipedia.org