There are two key problems with Hansen's argument against coal: cost and scale.

汉森反对使用煤炭的论点存在以下两个关键问题：这么做的花费和改变的规模。

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In my experience, two key problems plague documentation in software development.

按照我的经验，有两个关键性的问题制约着软件开发的文档化。

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Typically, two key problems need to be addressed for such a process implementation.

对这类过程的实现有两个典型的关键问题需要指出。

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The company also has just emerged from a spate of labor problems, with two local union strikes at key factories and a nearly three-month strike at key parts maker American Axle and Manufacturing Holdings.

FORBES: Magazine Article

The company also has just emerged from a spate of labor problems, with two local union strikes at key factories and a nearly three-month strike at key parts maker American Axle and Manufacturing Holdings (nyse: AXL - news - people ).

FORBES: GM's Late Wake-Up Call

Instead they attracted two legged solutions rather than problems, and gave us the key differentiator that was so crucial to our success.

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