precautions造句
Precautions had to be taken to prevent pilfering.
必须采取防范措施阻止偷盗行为。
You must take all reasonable
precautions to protect yourself and your family.
你必须采取一切合理的预防措施，保护自己和家人。
The Danes had selfconfidence of conquerors, and their security
precautions were casual.
这些丹麦人具有征服者的自信, 而且他们的安全防卫也是漫不经心的.