This pattern is consistent with the passing of a cold weather front bearing a strong area of low pressure at the surface.
沙尘暴的这种分布型式与地面冷锋造成的强低压区相一致。
Thunderstorms often occur along the boundary—the weather front—where two air masses with different temperatures and/or humidities collide.
雷暴通常就发生在两者交界处，即两个温度或湿度不同空气气团相撞的地方（锋面，theweather front）。
The weather front has also led many to worry about the possible health implications.
锋面还使很多人担心可能的健康影响。
The weather front has also led many to worry about the possible health implications.
锋面还使很多人担心可能的健康影响。
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