The main problems are weak awareness, inefficient and imbalanced supervision.

其主要表现是认识模糊、监督乏力、制约失衡。

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The main problems are fluid flow and elemental transportation, the fluid rock interaction and the source of the fluid.

研究的主要问题是流体流动机制和元素迁移，流体-岩石相互作用和流体来源。

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But there are some problems in the course of application, the main problems are information island, application island and resource island.

但是应用过程中也出现了一些问题，主要是存在信息孤岛、应用孤岛和资源孤岛的问题。

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"The main problems are that the airport environment is an alien one and processes such as check-in and security require co-operation with strict guidelines, " Ms Gough said.

BBC: Autism guide for airport travel

Complicating the Main Street problems are rising home foreclosures, fewer hours worked and higher real inflation.

FORBES: Markets Still Sending Warning Signals

The main deficit problems since 2009 are a permanently higher spending base (see Footnote No. 1) and the slowest economic recovery in modern history.

WSJ: Review & Outlook: The 10% President