contamination

However, contamination can occur at any point along the food chain, from field to table..然而，污染沿着食物链可能在任何的点上发生，从田地到餐桌。

Others have said that all of Mars should be protected as a wildlife preserve where we do everything possible to avoid contamination; on the assumption Martian microbes could exist..假设火星上可能存在微生物，其他人就认为火星应该是我们做任何事来避免污染的野生动物保护区那样来被保护着。

free from contamination,无污染

environmental contamination,环境污染

water contamination,水污染

contamination control,污染控制；污染管制

soil contamination,土壤污染

bacterial contamination,细菌污染

oil contamination,油污

radioactive contamination,放射性污染

microbial contamination,微生物污染

food contamination,食品污染

cross contamination,交叉污染；交互粘染

lead contamination,铅污染

source of contamination,污染源

surface contamination,表面污染

mercury contamination,汞污染

particulate contamination,微粒子污染