森林火灾在春天很常见，凉山已经制定了防火规则。
Forest fires are common in spring, rules to prevent fires have come out in Liangshan.
也许你可以告诉他们基本的防火规则。
Maybe you could tell them about the basic fire-safety rules;
双重柔性金属O形环阀座具有静止和动态密封性能，确保符合防火规则要求。
A double flexible metallic O-Ring seat provides a (1) static and (2) dynamic seal and assures compliance to fire-safe specifications.
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