In the past, health experts warned us that the day would come in which it would become very difficult to provide medical care for even common problems such as lung infection or severe sour throat.

过去，健康专家曾警告我们，即使是肺部感染或严重的咽喉痛等常见疾病，有一天也会很难得到医疗护理。

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In the past, health experts warned us that the day would come in which it would become very difficult to provide medical care for even common problems, such as lung infection or severe sore throat.

过去，健康专家曾警告我们，有一天，即使是肺部感染或严重的咽喉痛等常见疾病，也会很难得到医疗服务。

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Daily activities, such as walking up a short flight of stairs, may become very difficult as the disease worsens.

病情严重时，走上一小段楼梯这种日常活动都可能感到很困难。

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Without such data, predictive analytics become very difficult.

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It strikes me that trying to define where the front lines are might become a very difficult problem in wartime.

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