纳入的水分含量可导致中毒，这不是每个人都确信不疑，也是因人而异的。
The amount of water intake can lead to poisoning can not be known with certainty and varies in each individual.
通过使安装具有可回归性，我就可以确信，在任何时候，我都可以可靠地以低廉的代价把我的开发的任何版本安装到某个客户的机器上。
By keeping installation in the regression suite, I'm assured at all times that I can reliably and inexpensively relocate any version of my development to a customer's machine.
还鼓励卫生保健工作者确信他们了解自己的艾滋病毒状况，以便他们可避免使自己面临暴露的风险。
Health care workers are also encouraged to make sure they are aware of their HIV status so that they can avoid putting themselves at risk of exposure.
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