N-COUNT A hailstorm is a storm during which it hails. 雹暴
This area is hit by an average of about 5 hailstorms a year.
这个地区平均每年遭受大约五次冰雹袭击。
Hailstorms in Northern Greece: synoptic patterns and thermodynamic environment.
希腊北部雹暴：天气形势和热力环境。
Comparing with local heavy rain, the movement of radar echoes of hailstorms and thunderstorms is rapid.
冰雹、雷雨大风这类强对流天气的雷达回波移动速度快，而局地暴雨的雷达回波移动速度缓慢。
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