1. The contamination factor, soil composition and four cleaning methods of mould were introduced. 本文介绍了模具污染因素、污垢成份和四种清洗方法。
2. The contamination of soil by crude oil is a growing problem as China accelerates its exploitation of oil reserves to meet rising energy demands. 随著中国加速开采其石油储备从而满足日益增加的能源需求，原油污染土壤越来越成为一个问题。
3. The most notorious events are those where adulteration and contamination occurs simply because the farming and food fraternity are looking to increase profit. 最为臭名昭著的事件是那些仅仅因为农业和食品行业寻求增加利润而发生的掺假和污染事件。
英英解释
n.
1. the state of being contaminated
2. a substance that contaminates
3. the act of contaminating or polluting; including (either intentionally or accidentally) unwanted sub
