The extreme weather started with a low-pressure system near the North Pole.

这次极端天气起始于极附近个低气压系统。

Low air pressure and windy conditions were also linked to painful days.

低气压和多风的天气也与疼痛的日子有关。

When a bad weather low moves in, air pressure lessens and odors are released.

当低气压移动时，空气的压力减弱，气味就被释放了。

A deep depression is forming in the South Atlantic, moving north.

南大西洋在形成个低气压，移动。

But the bomb cyclone shook things up and sent all that Arctic air south.

炸弹低气压改变了, 所有极空气送往南方。

A low pressure weather system has brought strong winds blowing from south to north across Northern Italy.

低气压天气系统带来了从南到横跨意大利部的强风。

Yagi, which is now downgraded to a tropical depression, has left 3 million people without power.

台风摩羯现已减弱为热带低气压，导致300万人停电。

By Sunday, the storm had weakened to a tropical depression, a storm below the level of a typhoon.

到周日，风暴已减弱为热带低气压，低于台风级别。

Tropical Storm Fred weakened to a depression overnight, as it heads for the U.S. mainland.

夜间，热带风暴“弗雷德”在美国大陆移动时减弱为低气压。

Blame the bomb cyclone. Yep, that's right. Bomb cyclone is actually a real weather term.

这都是炸弹低气压所致。是的, 这是确的。这实际上是种真的气象术语。

Alberto was downgraded to a tropical depression after it made a landfall in the Florida panhandle.

飓风阿尔贝托在佛罗里达的狭长地带登陆后降级为热带低气压。

" Bomb cyclones" start as low pressure weather systems, the lower the pressure, the more powerful the storm.

“炸弹气旋”起初是个低气压天气系统，气压越低，后面的风暴越大。

A polar vortex is a cold, thick low pressure system. The air turns counter-clockwise when on the move.

极地涡旋是种寒冷而强烈的低气压系统，气流按照逆时针方运动。

The warm, humid air above the water surface rises up, creating a low air pressure zone in its wake.

水面上温暖潮湿的空气上升，在它的尾流中形成个低气压区。

But now downgraded to a tropical depression, it threatens to add more inches of rain to the area.

现在该风暴已降级为热带低气压，这可能会给该地区带来更多降雨。

It formed as a tropical depression, strengthened to a tropical storm and made landfall all on the same day.

伊美达初始是热带低气压，进而增强为热带风暴，其后在同天登陆。

By tomorrow morning, the fast moving storm is expected to be well inland over Nevada as a tropical depression.

截止明天早上，这场快速移动的风暴预计以热带低气压的形式进入内华达州内陆。

The weather is constantly in flux. A low pressure system allows moist air to rise, cool and form rain clouds.

天气是变幻无常的。低气压系统使潮湿的空气上升，冷凝，形成降雨云。

We're under the influence of a low-pressure and this weather front pushing northwards is bringing clouds and outbreaks of rain.

低气压在影响著我们。而且这个方推进的锋面带来了云和阵雨。

Very low pressure in the Sargasso Sea.

在马尾藻海的极低气压。