气团

例句：

1. 1. The weather forecast predicts a cold front moving in tomorrow.
   天气预报预测明天将有一股冷空气来袭。
2. 2. The scientist studied the behavior of gases under pressure.
   科学家研究了气体在压力下的行为。
3. 3. The team worked together to create a powerful gas bomb.
   团队共同努力制造了一个强大的气体炸弹。