A city of northeast Vietnam on the Red River delta near the Gulf of Tonkin.

越南东北的一个城市，位于接近东京湾的红河三角洲。

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The researchers analysed 512 private tubewells reaching to depths ranging from 10 metres to more than 50 metres throughout the country's Red River Delta.

研究人员分析了全国512个井深达到10至50多米的私人管式井泵。

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The northern part of the country part consists mostly of highlands and the Red River Delta. The south is divided into coastal lowlands and extensive forests.

这个国家的北部部分主要是由高原和红河三角洲组成，南部分为沿海低地和广泛的森林。

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ASEAN's founders dreamed that their organization would one day span the whole region, from the Indian Ocean to the Pacific, from the Red River delta to the rice padis of Java.

CNN: RETOOLING ASEAN