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记住一定要关掉防火门防止火势蔓延。
And always shut the fire doors to prevent the fire spreading.
youdao
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为了防止火势蔓延，必须立即采取行动。
Immediate action must be taken on to stop the fire spreading.
youdao
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为了防止火势蔓延，必须立即采取行动。
Immediate action must be taken on to stop the fire spreading.
youdao