我还是杰
Italian 英[ɪ'tælɪən] 美[ɪˈtæljən] n. 意大利语; 意大利人; 意大利国民; adj. 意大利的; 意大利语的; 意大利人的; 意大利文化的; [例句]I watch Italian football a lot.我常看意大利足球。[其他] 复数：Italians
你怎么都注册了
Pollution of soil is a phenomenon of alteration of natural chemical composition of soil caused by human activity. Among the main causes include: non-biodegradable waste, waste water, plant protection products, fertilizers, hydrocarbons, dioxins, heavy metals, organic solvents. This type of pollution leads the impairment of equilibrium physical-chemical and biological soil, so prepare to erosion and landslides may involve the entry of harmful substances in the food chain to humans. The substances that reach the groundwater ground water also can damage their delicate balance. Interference with them may occur, and consequently cause dangerous changes in drinking water, and then those used in man.
