Set to work with a will and be pleased with the amount you get done.干活时卖力干，干了多少都满意。He had reason to be pleased with himself, since he was one of only seven out of forty candidates who were successful.他有理由沾沾自喜，因为他是40个候选人里...
Of these minerals, kaolinite, illite and chlorite are commonest.在这些矿物中, 高岭石, 伊利石和绿泥石最常见.Rock fragments, including volcanics, are common, and the matrix consists largely of kaolin and illite.常见有岩石碎块, 包括火山岩屑, 基质大部分为高龄土和伊利石...