yellowing

变黄
泛黄
发黄

例句与用法：

That paper has yellowed with age.

那张纸因年代久远而泛黄了。

The leaves turn yellow in autumn.

秋天时叶子变黄。

The presence of excess carotene in the blood, often resulting in yellowing of the skin.

胡萝卜血症血液中出现过量的胡萝卜素，经常引起肤色发黄