至今为止，关于海岸海床地基土类的分析已有一些研究，但由于区域差异和研究侧重点的不同，尚难以进行系统的整理分析和深入研究。

Up to the present, There are some studies of seabed subsoil. Because of differences of regions and key researches, there are not systematic organization and further studies of seabed subsoil yet.

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并认为，这些债务根据研究侧重点的不同，可以有显性债务和隐性债务、直接债务和或有债务、赤字性债务、生产性债务和建设性债务等多种分类。

Those debts, with difference of special emphasis, can be divided into explicit and implicit debts, direct and contingent debts, deficit debts, productive debts and constructive debts.

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二十世纪80年代，研究的侧重点已经转向了市场激励机制、实现适当的价格、能源以及宏观经济调整。

In the 1980s, the research focus shifted toward market incentives, getting prices right, energy, and macroeconomic adjustment.

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