The village encountered a new problem two decades later as the environment became heavily polluted by chemical plants and mine refineries built in 1990s.

20年后，这个村庄遇到了一个新的问题，因为20世纪90年代建成的化工厂和炼油厂严重污染了环境。

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In most cases, finding a requirement problem in a requirements review is far cheaper than waiting until the application is designed, coded, built, and in testing to find the problem.

在大多数情况下，在需求评审中找到一个需求问题，要比等到程序设计好、编码好，构建好以及测试好之后再找到，成本要低得多。

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The problem is compounded by the fact that synchronization is a built-in language feature.

此外，还有一个问题是，同步是一种内建的语言特性。

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"There is industry input, but there is not industry control, " he insists. (Ten members of a 22-member board are from the industry.) Still, that built-in conflict of interest is hardly the only problem.

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There's also the problem of the iPhone's built-in battery, which can't be swapped without a trip to the factory.

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The problem with installing micro turbines in built-up areas is two-fold.

CNN: Can 'small wind' reap big rewards?