在这些矿物中, 高岭石, 伊利石和绿泥石最常见.Of these minerals, kaolinite, illite and chlorite are commonest.高岭石呈假六边形片体, 往往以书页 状 或蠕虫状规则排列.Kaolin forms pseudo - hexagonal plates, often regularly arranged in book - like or vermicular stacks.本文...
This is impossible to measure precisely, particularly after recent upheavals.对此精确衡量是不可能的, 尤其是在最近的动荡之后.Their fear of reversals and upheavals is fully understandable.他们这种怕反复、怕折腾的心情是完全可以理解的.The whole of Africa had been buff...