当火灾发生时，不幸正遇上一阵大风。
As luck would have it, there was a sudden gust when the fire broke out.
【译文】当火灾发生时，志愿者们从四面八方赶来帮忙。
When the terrible fire happened, volunteers came from far and near to help put it out.
引导学生当火灾发生时，希望有超人来扑灭火并救出火中之人。
When a big fire happen, we always hope there is a superman who can help.
当火灾发生时，装饰片与支架之间的低熔点焊接金属首先熔化，装饰片脱落。
In case of fire, the meltdown first occurs in metal welded at low melting points and the decorative slice drops off.
当火灾发生时，被困人员可以使用，达到平稳、安全、迅速地逃离危险现场。
When fire takes place, people can use this tool to safely and quickly leave the site.
Skylab是美国第一个空间实验室，当火灾发生时或者有害气体发生泄漏时，宇航员需要立刻做出反应。
Skylab was the first U. S. space station, and the astronauts would need to know if a fire had started or if noxious gases were loose in the vehicle.
当发生火灾时，你需要区分火灾的根源并找到安全出口。
When it comes to fire, you need to distinguish the root of the fire and find out security exits.
对于象股市、地震和森林火灾等复杂的系统，物理学家们了解的一点是，当变化发生时，它们的规模不变。
One thing that physicists have learned about complex systems, such as stock markets, earthquakes, and forest fires, to name just a few, is that when changes occur they are scale invariant.
火灾发生的时候，工人们仅有的安全措施是27桶水和一个太平梯。当人们试图利用梯子逃生时，它却崩塌了。
At the time of the fire the only safety measures available for the workers were 27 buckets of water and a fire escape that would collapse when people tried to use them.
当发生火灾时，保持头脑冷静，而不是向安全出口拥堵，能够带来生与死的不同结果。
Keeping your head may make the difference between life and death. 2 When fire breaks out.
当站台中部发生火灾时，只有机械排烟和挡烟装置配合使用才可以有效地控制烟气。
When a fire occurs at the center of the platform, both the smoke evacuation fan and the smoke blocking wall can effectively control the smoke.
通过引入可维生环境的设计概念，当隧道内发生火灾时，利用纵向通风模式达到满足隧道内人员疏散逃生要求的目的。
Through the application of tenable environment concept, the aim is to let passenger successfully evacuate under the longitudinal ventilation when fire occurs.
当一个上述的火灾发生时，通常是由于电池内部的短路引起。
When afire like this happens, it is usually caused by an internal short in the battery.
当电流穿过绝缘层时发生热量，会使绝缘层好转，直到最后绝缘生效，并会构成火灾隐患。
When the current through the insulating layer of heat, will improve the insulation layer, until the final insulation effect, and will constitute a fire hazard.
当有火灾发生时，我们应当保持冷静，尽快拨打119，报警时要讲清火灾地址； 及时切断电源，不要随便开窗； 如果可能，找到灭火器灭火；
When a fire breaks out, we should keep calm and dial 119 as soon as possible and remember to tell the exact site where the fire broke out.
本发明能以简单的结构，而有效 地防止当楼宇中某个房间发生火灾时其向周围相邻房间蔓延，从而防止更大 火灾的发生。
With a simple structure, the building structure effectively prevents fire spreading to peripheral adjacent rooms when one room in the building is in fire so as to prevent larger fire hazard.
麦克：灭火并不意味着让所有的火灾都不会发生，而是当它发生时，你有能力去扑灭它。
Michael: Fireproof doesn't mean that a fire will never come, but that when it comes, you will be able to withstand it.
麦克：灭火并不意味着让所有的火灾都不会发生，而是当它发生时，你有能力去扑灭它。
Michael: Fireproof doesn't mean that a fire will never come, but that when it comes, you will be able to withstand it.
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