正如我们在无符号整型的例子中所看到的，你必须保持一定的警惕性以保证你的应用程序能够正常工作。
As we saw in the case of unsigned integers, there is a level of vigilance you must uphold to ensure your applications work as expected.
应该对备份进行例行检查，以保证备份过程工作正常。
You should routinely check your backups to ensure that the process is working correctly.
普通电机型禁止在含有易燃和腐蚀性气体条件下工作，以保证安全生产及各电气元件的正常工作。
General electric type prohibited in flammable and corrosive gases contain conditions to ensure safety in production and the electrical components work properly.
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