To reduce the occupied area of land, coal wastes are used as the materials of the tailings dam.
为减少土地占用面积，采用煤矸石作为尾矿库初期坝的筑坝材料。
But, our country a lot of land is occupied, can continuously reduce the cultivated land area, arable land decrease, many kinds of food less, even some people starve to death.
可是，我国大量的土地都被占用，耕地面积就只能不断的减少，耕地减少，种的菜就少了许多，甚至有些人被饿死。
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