discoloration
US /dɪˌskʌl.əˈreɪ.ʃən/
UK /dɪˌskʌl.əˈreɪ.ʃən/
名词
1.
变色
a change to the original color of something that makes it look unpleasant or damaged:
示例:
•
Too much fluoride can cause a harmless discoloration of the teeth.
在 Lingoland 学习这个单词