绿片岩相以下的动力变质作用是矿化富集的条件.Dynamical metamorphism under greenschist facies is the condition of mineralizing enrichment.大水沟独立碲矿床的直接赋矿围岩为低绿片岩相变质岩.The host rocks of Dashuigou independent tellurium ore deposit are mainly green sc...
Natural disasters have obvi-ously contributed to the continent's economic crisis.很显然，自然灾害也是造成该大陆经济危机的原因之一。The accident has echoes of past disasters.那起事故仿佛是过去灾难的重现。disasters such as floods and famine水灾和饥荒这一类灾难...
儿童节那天所有的孩子都打扮得很漂亮.The children were all beautifully got up on Children's Day.卡卡,你知道什么时候是儿童节 吗 ?Do you know when Children's Day is, KaKa?在儿童节这天孩子们玩得很开心.On Children's Day little boys and girls have a wonderf...