In supercells, this rising air mass is particularly strong.

在超级雷暴云中，这些上升的气团格外的强大。

A frigid air mass from Siberia brought deep cold across much of the eastern United States today.

来自西伯利亚的冷气团让美东部大部分地区遭遇降温。

The colder air mass is heavier than the warmer air, and so the lighter, warmer air rises over the top of the heavier, cooler air.

较冷的气团比较热的空气重，因此较轻的空气——暖空气上升到较重、较冷的空气上方。

The heat is expected to intensify over the next few days as the air mass moves across the country towards its more populated eastern seaboard.

未来几天，随着高温气团向人口更密集的东部沿海地区移动，预计高温天气将进一步加剧。

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。

The most extreme white-knuckle turbulence is super rare, but an updraft is a big air mass — part of a storm or some other weather phenomenon moving upwards.

最令人恐惧的极端乱流非常罕见，但上升气流是一种巨大的气团——风暴或其他天气现象的一部分向上移动。

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。

That is, some of it goes back towards the Pacific, but some goes in to the Indian Ocean, and that diverging air mass at the surface is tending to push warm water towards the Western Indian Ocean.

也就是说，一部分回流到太平洋，但另一部分进入印度洋，海面上不断扩散的气团倾向于将温暖的海水推向西印度洋。