A discolored spot, smudge, or area; a stain.

变色点，污渍，污处；污迹。

Then the skin can become thick and discolored.

皮肤随之变得厚而无色泽。

There are some discolored areas inside on his tongue.

他舌头里边有些地方颜色怪怪的。

There are some discolored areas inside on My tongue.

我舌头里边有些地方颜色怪怪的。

They can be large or small, hollow or solid, clear or discolored.

它们或大或小，或空心或实心，或透明或变色。