wind direction

基本解释

Wind direction shown by smoke-drift, but not by wind vanes.
从烟的动向可以判断出风向，但不能通过风向标判断。
This is highly pertinent. The wind direction, should there be a plume containing radioactive material, determines whether fallout will land on populated areas or in the sea.
这是一个关键问题，如果含有放射物质的云团出现，那么风向将决定这些放射性坠尘会降落在聚居地还是海洋。
By determining wind speed and wind direction, it will be possible to predict exact forecasts for international airports.
《护卫者号》将通过测定风速和风向，为各国际机场提供准确的气象预测信息。

Meteorologists and aviation authorities are monitoring wind direction and the ash cloud's movement from Iceland to determine where and when to shut down airspace in Europe.
Now there is worry about a new threat headed in their direction in the wind a fungus that destroys wheat crops.

Today, however, the dominant wind is reported to have shifted and wind direction is more variable.
UNESCO: Social and Human Sciences
If air movement up and down the mountain's slope governed wind direction, dominant winds generally would be north-south.
ENGADGET: Curiosity rover finds radiation levels on Mars are safe for humans

风向
The wind direction has no obvious interannual change,and they are almost the same in each year. Wind speed has a weak diminishing interannual trend.
风向没有明显的年际变化,每年各个方向出现的频率大致相同;风速有较弱逐年递减的年际变化趋势。
环境科学技术
风向