环流湍流对烟流抬升有重要的作用。

Ambient turbulence has an important effect on plume rise.

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高层建筑火灾时期，通道烟流的温度变化规律是消防工程设计的基础。

During a high rise building fire, the rule of change in smoke temperature is the basis of fire engineering design.

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如果晚些时候拍摄，到积雪覆盖整座火山之后，火山烟流将在白色背景下难以看到。

If the image had been taken later in the year, when snow covers the entire peninsula, the ash plume would be difficult to see against a white background.

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