The application must somehow decode all the content, so it is more difficult to extend the application.

应用程序必须解码所有内容，因此更难以扩展。

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These agencies often have legacy systems that are proprietary, difficult to extend, or otherwise closed to external systems.

这些机构通常拥有遗留系统，那些系统是专有的，难于扩展，或以其他方式对外部系统是封闭的。

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Conversion of polymerization can be improved by using oxidation-reduction initiator system but it is difficult to extend the idle time.

采用氧化还原引发体系可以提高单体转化率并实现单体聚合，但无法延长单体聚合的诱导期。

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But they in turn find it difficult to extend their power across tribal lines.

ECONOMIST: Far more than two sides to the conflict

But it is incredibly difficult to accept that this confusion could extend to nine days after the events occurred.

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Deputy Eddie Noel, the Assistant Treasury Minister, said it was found to be technically feasible to extend the car park but the additional cost would be difficult to justify.

BBC: Car park 'could be redeveloped' as part of police HQ plan