Therefore, the most urgent key project for us to study is to solve how to take advantage of security technology precaution, to construct an effective multiple precaution panic alarm system.

因此，如何利用安全技术防范的优势，构建起有效的社区安全防范综合报警服务体系，就成了当前迫切需要研究和解决的重要课题。

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As a precaution on board the general emergency alarm was promptly sounded, all passengers and crew members, and those not involved in emergency management, went to muster stations with the safety equipment required.

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Staff raised the alarm and got blankets and a fire extinguisher as a precaution.

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