Meanwhile an unusually wet autumn and a low pressure weather systems over the eastern seas have pushed the murk from steel plants in the south back up into the North China plain.
与此同时，一个异常潮湿的秋天和东部海域的低气压天气系统将南方钢铁厂排放的污染物推回华北平原。
Some study results and technologies of submarine sand ridges geomorphology are summarized, and several unfathomed issues of sand ridges on the eastern China seas are discussed in this paper.
综述了国内外海底沙脊地貌的研究成果、技术方法以及东中国海沙脊研究中存在的问题。
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