你必须采取一切合理的预防措施，保护自己和家人。
You must take all reasonable precautions to protect yourself and your family.
承包商应采取合理的预防措施以维护其人员的健康和安全。
The Contractor shall at all times take all reasonable precautions to maintain the health and safety of the Contractor's Personnel.
即使是在食品标签上印刷警告这样明显合理的预防措施也充满了纠纷。
Even the apparently sensible precaution of printing warnings on food labels is fraught with complications.
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