松鼠贮藏坚果以备过冬.The squirrel makes a store of nuts for the winter.松鼠是栖于树上的动物.Squirrels are arboreal creatures.红色松鼠在英国已十分罕见了.Red squirrels are now very rare in Britain....
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...