形势因一场严重的森林火灾的蔓延而复杂化了。
The situation was complicated by the spread of a serious forest fire.
消防员马上采取行动,制止了森林火灾的蔓延。
The firemen took action immediately to stop the forest fire spreading.
固体可燃物火蔓延速率对于火灾的蔓延有重要的影响。
The spreading velocities of fires of combustible solids depend on the spreading speed of fires.
They will only put it out if it's a fire in the home of a subscriber or if it starts to spread and to threaten the home of a subscriber.
他们只扑灭发生在会员家里的火灾,或者是即将蔓延到他们会员家里的火灾。
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