| I | brighten |
|---|---|
| you | brighten |
| he/she/it | brightens |
| we | brighten |
| you | brighten |
| they | brighten |
| I | brightened |
|---|---|
| you | brightened |
| he/she/it | brightened |
| we | brightened |
| you | brightened |
| they | brightened |
| I | have | brightened |
|---|---|---|
| you | have | brightened |
| he/she/it | has | brightened |
| we | have | brightened |
| you | have | brightened |
| they | have | brightened |
| I | had | brightened |
|---|---|---|
| you | had | brightened |
| he/she/it | had | brightened |
| we | had | brightened |
| you | had | brightened |
| they | had | brightened |
单语范例（未经PONS编辑处理）
Furthermore, many lacked stability through washing or exposure to sunlight, or fastness.
en.wikipedia.org Reactive dyes have good fastness properties owing to the bonding that occurs during dyeing.
en.wikipedia.org Some milling dyes have poor light fastness in pale shades.
en.wikipedia.org Because the slowness or fastness are determined by the complexity of these musical manifestations.
en.wikipedia.org It is highly valued for its superior properties such as light fastness, tinting strength, covering power and resistance to the effects of alkalies and acids.
en.wikipedia.org