heavy metal pollution的用法和樣例：
例句
- Heavy metals contamination is the main type of soil contamination.
重金屬污染是土壤污染的主要類型之一。 - The disappearance of metal pollution in the soil will come as the surface of the planet moves underground, unless the earth itself instigates extremely strong crustal movement.
土壤重金屬污染的消失，除非地球進行強烈的地殼運動，把表層沉地地底。
