VERB
污染;弄脏
If something is contaminated by dirt, chemicals, or radiation, they make it dirty or harmful.
例句
Have any fish been contaminated in the Arctic Ocean?
北冰洋的鱼受到过污染吗？
...vast tracts of empty land, much of it contaminated by years of army activity.
大片撂荒的土地，其中大部分由于经年累月的战火而受到了污染