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(jìn)行強烈的地殼運動(dòng)，把表層沉地地底。
Methods of environmental investigation were adopted to study the contents of heavy metals in the soil at the tumorous stem mustard cultivation base in Nantuo, Fuling. 采用環(huán)境調查的方法研究了涪陵南沱鎮莖瘤芥種植基地土壤重金屬含量。
