| I | discolour |
|---|---|
| you | discolour |
| he/she/it | discolours |
| we | discolour |
| you | discolour |
| they | discolour |
| I | discoloured |
|---|---|
| you | discoloured |
| he/she/it | discoloured |
| we | discoloured |
| you | discoloured |
| they | discoloured |
| I | have | discoloured |
|---|---|---|
| you | have | discoloured |
| he/she/it | has | discoloured |
| we | have | discoloured |
| you | have | discoloured |
| they | have | discoloured |
| I | had | discoloured |
|---|---|---|
| you | had | discoloured |
| he/she/it | had | discoloured |
| we | had | discoloured |
| you | had | discoloured |
| they | had | discoloured |
单语范例（未经PONS编辑处理）
These pigmented fungi discolor wood, producing cosmetic damage that makes it less marketable.
en.wikipedia.org Some other kinds of algal blooms make the seawater appear red, but red tide blooms do not always discolor the water nor are they related to tides.
en.wikipedia.org Internal staining of dentin can discolor the teeth from inside out.
en.wikipedia.org The flesh does not discolor when it is cut or otherwise injured.
en.wikipedia.org It causes verticillium wilt in many plant species, causing leaves to curl and discolor.
en.wikipedia.org