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Dense smoke spread all over the cabin.
浓烟蔓延整个客舱。
The smoke spread north into Texas and surrounding states, reported the Smog Blog.
烟雾搜索报道说,这些烟雾扩散都北部进入了德克萨斯州与周围地区。
Therefore, the study on features of fire smoke spread and harmfulness of the railway tunnel is of great significance.
因次,对特长铁路隧道火灾烟气蔓延特性及危害性的研究具有十分重要的意义。
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