The pollen can be carried aloft and travel great distances in the upper air stream.
花粉能被带到高处,并在高层的气流中被带至很远的距离.
辞典例句
For they are as light as upper air.
因为他们的身子是空气似的轻.
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They are as light as upper air!
他们的身子是像空气似的轻.
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Usually, such harmful fumes rise into the upper air and are blown away by the wind.
这种有害烟尘通常会上升到空气的上层,被风吹散.
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In different seasons and different time periods, surface and upper air meteorological factors play different roles.
在不同季节、不同时期, 地面和高空气象因子作用是不同的.
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