The snow, except where it drifted, was only calf-deep.除了吹得堆积起来的地方，雪只有小腿肚深。A pall of oily black smoke drifted over the cliff-top.一团油腻的黑色烟雾飘到悬崖顶上。A smell of bread drifted from some distant bakery.一阵面包的香味从远处的面包房飘来。...
它可以用来估计包括闪锌矿在内的储量.It enables an estimate to be made of the reserves , including sphalerite.金矿的主要载金矿物分别为:毒砂 、 磁黄铁矿 、 黄铁矿 、 方铅矿和闪锌矿.The main gold bearing minerals include arsenopyrite, pyrrhotine, pyrite, galena and sphale...