In the middle-late stages of production, as the deepening of the oil field development, the marginal operation output decrease, the cost increases, and the investment increase, too.

在油田开采中后期，随着油田开发程度的加深，措施作业边际产量递减，措施作业边际费用递增，措施作业增量边际成本递增。

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There are three stages(early, middle and late) in the development of Wang Li 's views on the nature of Chinese disyllabic roots.

王力先生的联绵字观念分早期、中期和后期三个阶段。

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Even drugs that have built a strong track record in earlier trials fail in the late stages of development.

FORBES: How A Failed Alzheimer's Drug Illustrates The Drug Industry's Gambling Problem

It also has a drug that is being tested in late-stage clinical trials and another in the early stages of development.

FORBES: For Drug Deals, Think Small