点击下方单词,选择对的这个单词
1. the act of contaminating or pollutingincluding (either intentionally or accidentally) unwanted substances or factors
Synonym: pollution
2. the state of being contaminated
Synonym: taint
3. a substance that contaminates
Synonym: contaminant
多通过句子记忆单词,而不是单独死记硬背。