secondary cold front

例句：

1. 1. The weather forecast predicted a secondary cold front would move in over the weekend.
   天气预报预测周末将有一股次要冷锋移动过来。
2. 2. The scientists observed that the secondary cold front was causing significant changes in the weather patterns.
   科学家们观察到，次要冷锋正在导致天气模式的重大变化。
3. 3.The secondary cold front brought with it a chilly breeze and a drop in temperature.
   次要冷锋带来了一阵寒风和温度的下降。