According to the data observed at the middle-and-lower reaches of Han River in 1992, the water quality is classified, and the conclusions are the same for the two different methods.
根据1992汉江中下游各断面实测数据，得出水环境质量等级，结果表明两种方法得出的结论是一致的，中游好于下游。
There are lots of similarities between the middle and lower reaches of the Han River and Tennessee Valley in natural conditions.
湖北汉江流域中下游在自然条件上与田纳西流域有许多相似之处。
The Han people can be found throughout the country, though mainly on the middle and lower reaches of the Yellow River, the Yangtze River and the Pearl River valleys, and the Northeast Plain.
汉族人分散在全国各地，但主要聚集在黄河中下游地区，长江流域、珠江流域和东北平原。
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