Could he not, just as a precaution, move to a place of safety?

就算是作为防范，难道他就不能搬到一个安全的地方去吗？

He took elaborate precautions to conceal his true persona.

他采取了周密防范来掩盖自己的真实人格。

Extra safety precautions are essential in homes where older people live.

在有老人的家中，额外采取一些安全防范措施是十分必要的。