珠江三角洲地区是我国人口密度很大、工农业和商业高度发达的地区，对燃料的需求量很大。
The density of population is big, the industrial agricultural and commercial sectors are highly developed, and the fuel demand is great in Zhujiang delta area.
流域中下游工农业生产发达，人口密集。
The middle and lower basin is well developed in agricultural and industrial production and densely populated.
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