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

这次极端天起始于北极附近一个低系统。

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

低和多风的天疼痛的日子有关。

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

当低移动时，空的力减弱，味就被释放了。

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

南大西洋正在形成一个低，正向北移动。

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

但炸弹低改变了一切, 将所有北极空送往南方。

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

低天系统带来了从南到北横跨意大利北部的强风。

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”在向美国大陆移动时减弱为低。

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

这都是炸弹低所致。是的, 这是正确的。这实际上是一种真正的象术语。

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。

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

“炸弹旋”起初是一个低天系统，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.

极地涡旋是一种寒冷而强烈的低系统，流按照逆时针方向运动。

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上升，在它的尾流中形成一个低区。

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

但现在该风暴已降级为热带低，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，进而增强为热带风暴，其后在同一天登陆。

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将以热带低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.

天是变幻无常的。低系统使潮湿的空上升，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.

低正在影响著我们。而且这个向北方推进的锋面带来了云和阵雨。

It's an area of low pressure around the Artic Circle that's locked in place and houses some very cold air.

这是北极圈周围的一个低区域，这个区域被锁定在某个地方，并且容纳了一些非常冷的空。

When warm waters fuel the ferocity of depressions over the ocean, they can create the most violent weather systems on Earth.

当暖流为海洋上空低推波助澜，它们便会联手创造地球上最为恶劣的环境。

A weakening Henri is now a tropical depression and is churning eastward over New England and back toward the Atlantic Ocean.

飓风“亨利”不断减弱，已变成热带低，在新英格兰上空向东移动并返回大西洋。