These winds spin around a low-pressure center called the eye.

这些风围绕着一个叫做“风眼”低压中心旋转。

It's a low-pressure system that's basically locked into the North Pole.

它是一个低压系统，基本北极内。

And in contrast, veins are usually high volume, low pressure vessels.

相比之下，静脉通常是体积大、承受低压。

Low pressure from the north meets moist air near Hawaii.

来自北方低压夏威夷附近与潮湿空气相遇。

So when we're harvesting geoduck, we use low pressure, high volume water.

因此，当我们收获象拔蚌时，我们使用是低压大容量水。

That difference made the ball curve towards the lower pressure zone.

压力差让球朝向低压区转弯。

But due to the presence of low-pressure zones, these winds follow a circular path.

但是由于低压区存，这些风沿着一个圆形路径。

And the casualties of low-pressure fronts simply move on-gingerly.

低压锋过境造成伤亡人数持续，小心。

In other words, the low-pressure region acts like a vacuum!

换句话说，低压区就像吸尘器一样把血液“吸”过来了！

Following the flow of wind means that they're always heading toward areas of low pressure.

随着风向迁徙，意味着它们总是飞向低压地区。

Yagi has now been downgraded to a tropical depression.

目前，“摩羯”已减弱为热带低压。

Hagupit has been downgraded to a tropical depression as it's leaving the region.

“黑格比”减弱为热带低压，离开该地区。

How's his blood pressure? -It's, uh, still dropping. 82 over 40.

他血压怎么样？- 还降，高压82，低压40。

You have tropical depressions, tropical storms.

有热带低压和热带风暴。

However, the study defined high blood pressure as 140 over 90.

然而，该研究将高血压标准为高压140，低压90。

But we also have this very deep trough that is set up over the United States.

但同时美国上空又存一个非常深低压槽。

When I went to the urologist last week, the girl said it was 117 over 77.

上周，我去看泌尿科医师，那个女孩说我高压是117，低压是77。

But in higher winds, they create alternating low pressure zones that make the building rock back and forth.

但大风中，它们会形成交替低压区，使得建筑石头来回摇摆。

A tragedy has been caused by a tropical depression which brought days of heavy rain in several provinces.

这场悲剧是由热带低压引起，给几个省份带来了连日大雨。

When tropical cyclone is an area of low pressure that forms in the tropical regions of the world.

热带气旋是热带地区出现形成低压带。