动词 yellow:

1. turn yellow

yellowadj.黄色的n.黄色；蛋黄；黄种人v.（使）变黄yellow wind黄风yellow leaf黄叶Yellowstonen.黄石公园(美国)yellow bark[医] 黄金鸡纳皮yellow edge黄边病yellow glow黄辉光yellow hair黄头发yellow spot黄(色)斑(点)yellow page黄页yellow deal黄松板

1. The leaves of the trees are yellowing.
   树叶正在变黄。
2. Watch for yellowing or black spots on the stems.
   注意茎部的泛黄的或黑色的斑点。
3. Traces of your smile in yellowing despair.
   你的笑容已泛黄。
4. The leaves of the book were yellowing with age.
   书叶因年久而发黄。