此外，常规检测大流行性流感需要较高的费用和技能，超越了多数国家能力可及的范围。

Moreover, routine testing for pandemic influenza is costly and demanding, and beyond the reach of most countries.

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实验检测和医疗协助的费用昂贵，墨西哥的准妈妈们难以承担。

Laboratory tests and medical supplies are often too costly for the poorest Mexicans.

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该系统利用推理对航空继电器检测和替换顺序进行了优化，节约费用约50％。

This system optimizes the test and replacement sequence of the aviation relay by using reasoning, and the costs are reduced by as much as 50%.

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