形容词
中文翻译：预防的
同义词：
['cautionary', 'prudent', 'cautious']
例句：
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1. It's always a good idea to take precautions before starting a new project.
在开始一个新项目之前，采取预防措施总是一个好主意。
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2. The doctor advised us to be cautious when handling sharp objects.
医生建议我们在处理尖锐物体时要当心。
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3. He was cautious about the risks involved in the experiment.
他对实验中涉及的风险持谨慎态度。