有些只是失去部分功能，其他可能完全失效。
Some lose only part of their function; others may stop working altogether.
如果在文件系统级进行备份，就可能使数据库完全失效。
One may render a database completely useless should he back it up at the filesystem level.
相反，他把这一案例描述成“健康和安全措施的完全失效”的一个例子。
Instead he describes the case as an example of a "total failure in health and safety procedures".
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