Still, some schools have re-evaluated their safety needs in response to the concerns of families and communities.
作为对家庭和社区安全担忧的回应,一些学校还是重新评估了他们的安全需求。
System safety programs (SSPs) seek to integrate the process of identifying safety needs and managing them over time.
系统安全工程的目标是要把发现和管理安全需求的过程有机结合。
The safety of food derived from biotechnology needs to be carefully assessed.
必须对用生物技术生产食品的安全性认真进行评估。
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