其它矿物: 毒砂 、 自然铋、辉铋矿 、 黝铜矿 、 汞等.Other minerals: Arsenopyrite, Native Bi , bismuthinite, tetrahedrite, Hg, etc.银形成于硫化物成矿后期的硫锑铅矿─方铅矿─ 黄铜矿 ─银黝铜矿阶段.The mineralization of silver at the late stage of formation of sulfides, i. e....
A smallholding in the hills could not support a large family.山间的一小块耕地是不可能养活一大家人的。The soil washed from the hills is silting up the hydroelectric dams.从山上冲刷下来的泥土就要让水电大坝淤塞了。The hills rise green and sheer above the broad riv...