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蒙古乌兰巴托周边发育了多条活动断裂。以乌兰巴托以西的Emeelt和Hustai断裂为例，对相关断层开挖探槽，进行年代学研究。结果表明，Emee......
It has been found that air pollution was a social problem since the beginning of the 14thcentury.Throughout the history,......
