1 . contamination
contamination 污物contamination 沾染;污染;栅极沾污漏电contemplated route 预定航线
2 . stain
stage 舞台;阶段stain 污点沾污,沾染stainless 不会染污的
3 . besoiledwithgrease,etc
[渍]字相关字词的解释及出处典故 ... 染〖dye〗 沾染〖contaminate;besoiledwithgrease,etc.〗 染〖病〗〖catch(adisease)〗.
4 . taint
BBC 1分钟听写 ...taint 使感染,使腐坏;沾染;污染as far back as 早在,远在