Powdery, fresh snow can be up to 95% trapped air.

新鲜的粉末状雪花有时能锁住95%的空气。

Over time, trapped air slowly diffuses into the bloodstream, and tiny airways collapse - a process called atelectasis.

随着时间的推移，这一段空气会慢慢扩散到血液中，细小气管萎缩内陷，这就是肺不张的形成过程。

And the bubbles trap air from 20,000 years ago.

这些气泡吸附着 2 万年前的空气。

Tiny hairs on their legs trap air bubbles and increase their buoyancy.

它们腿上的细毛捕获气泡并增加它们的浮力。

Trapped air may reveal the secrets of 1.3m years of climate change.

收集的空气可能揭示130万年前的气候变化的秘密。

He then forced his jeans under water to trap air and create a life jacket.

然后，他把牛仔裤压在水下以隔绝空气，从而做成了一件救生衣。

As winter approaches, the cold air acts as a blanket covering the ground trapping air pollutants.

随着冬季的来临，寒冷的空气如同厚重的毯子，覆盖在地面上，封锁住了空气污染物对外流通的渠道。

The pockets of trapped air in between the snowflakes actually weaken the vibrations and converts the sound into small amounts of heat.

在雪花之间空隙里的空气渐弱了声音的震动，并且把声音转换成热量。

In addition, dead cells and mucus slide into the airway forming mucus plugs which can trap air behind the plug.

此外，坏死的细胞和黏液滑入气管形成黏液栓，并将空气堵在栓后。

Normally, between the polar vortex stays where it's supposed to be-in the North Pole, trapping frigid air up where it belongs.

通常, 位于北极的极地漩涡限制住了寒冷空气。

Clothes help by trapping air against your skin.

加热以加热备用空气。 衣服有助于将空气困在下面。

Generally speaking, a foam is a bunch of air bubbles trapped in a liquid and something in that liquid is called a surfactant, a surface-active agent.

一般来说，泡沫是一堆被困在液体中的气泡，液体中的物质被称为表面活性剂，一种表面活性剂。

Trapped air bubbles contain samples of the atmosphere that existed when that ice was formed.

被困气泡包含冰形成时存在的大气样本。

Which might not seem that helpful now, but to our hairy ancestors, it was a way to trap air in our furry insulating layer.

虽然鸡皮疙瘩现在看起来没啥用，但对于我们浑身长毛的祖先来说，这样能把冷空气隔绝在我们毛发的隔热层里。

Well, when this type of soap is made, it's whipped and moved around really quickly, trapping air bubbles inside the soap.

好吧，当制作出这种类型的肥皂时， 它会被快速搅打并四处移动，从而将气泡困在肥皂中。

That’s a nucleation site--it could be a fiber or dust particle on the glass, an imperfection or bump, or even a tiny trapped air bubble.

那是一个成核点——它可能是玻璃上的纤维或灰尘颗粒、缺陷或凸起，甚至是微小的气泡。

I then understood the role played by these waves, which trap air in their flanks and release it in the depths of the sea where its oxygen brings life.

于是我明白了，这些海浪把空气包抄起来压缩进海底，同时，它们也带走了生命和氧气。

Experts say suppressing a sneeze can lead to numerous other complications, like trapped air in the chest, a perforated eardrum or blood vessel, broken ribs, and maybe even a middle ear infection.

专家说，抑制住喷嚏会导致许多其他并发症，例如胸腔积气、鼓膜或血管穿孔、肋骨骨折，甚至可能是中耳感染。