The conventional methods for oilfield development are hard to meet the demands of economic benefit, after the mid-high permeability reservoir is entered into high water-cut stage.

中高渗油藏进入高含水开发阶段后，常规方法在经济效益等方面已很难适应油田开发的需要。

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According to development economics, capital input is crucial in modern economic growth, especially in the take-off stage.

根据发展经济学的理论，在现代经济增长中，资本的投入十分重要，特别是在经济起飞阶段。

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However, since the development and integration of the human resource based on regional economic cooperation in China is still at the starting stage, there are lots of questions.

然而，中国基于区域经济合作的人力资源开发与整合尚处于起步阶段，因而存在着很多问题。

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On the contrary, it is a natural stage of economic development.

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China is in the stage of its economic development where it needs, and wants, to increase domestic demand for its products, and move away from dependence on exports.

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Before we answer this, one needs to revisit the American Economic Historian W.W. Rostow who in the sixties had suggested that countries passed through 5 stages of economic development as Traditional Society, Transitional Stage, Take-off, Drive to Maturity and High Mass Consumption.

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