For example, if the cold air mass is feeling feisty and moves in on a warm air mass, we get a cold front.

例如，如果冷气团感觉活跃并进入暖气团，我们就会得到冷锋。

Starting from June 21, the Beijing-Tianjin-Hebei region has been experiencing the influence of a warm air mass that is relatively strong in intensity and has a prolonged impact.

从 6 月 21 日开始，京津冀地区一直在经历一次强度较强、影响持续时间较长的暖气团影响。

Meteorologists say it's too early to attribute the extreme heat to climate change, but do say the driving force is a warm air mass from Africa's west coast moving across Europe.

气象学家表示，现在将这些极端高温归因于气候变化还为时过早，但他们确实表示，这和来自非洲西海岸，途径欧洲的暖湿气团有很大关系。