But though it spewed ash more than five miles in the air over the past few days, authorities are concerned that a larger eruption could happen soon.

它爆发产生的火山灰在几天内就在空气中传播了几英，府担心最近将会有更大的喷发。

These videos that are circulating are going viral.

这些频在广泛传播中走红。

Ebola does not travel through the air like the flu, for example.

埃博拉病毒并不会像流感一样在空气中传播。

It's an entertaining and scientific exploration as to why we experience loneliness on a biological level, how it spread in society and what science has to say about how to escape it.

为什么感受到孤独是生物学的一部分，孤独感如何在社会中传播， 且如何用科学的方式远离它。

Yeah, coccidia can go through the whole flock.

是的，球虫可以在整个鸡群中传播。

The reason why hunger is rising seems to be that, as the food system has lost its resilience, more and more contagious shocks are being transmitted across it.

饥饿指数上升的原因似乎是粮食系统失去弹性，越来越多的震荡在系统中波动传播。

There's two kinds of flus: there's flus that spread between humans very effectively and there's flus that kill lots of people.

一种在人群中快速传播，一种致死率非常高。

One professor said, our research shows, however, that new innovations can spread like social media memes through insect colonies, indicating that they can respond to wholly new environmental challenges much faster than by evolutionary changes.

一位教授表示，然而，研究表明，新的创新可以像社模因一样在昆虫群落中传播，这表明它们对全新的环境挑战的反应比通过进化变化要快得多。

She wants to be a teacher and to spread the joy of creativity among children.

她想成为一名教师，在孩子们中传播创造力的快乐。

In that same time, bacterial life did spread across the watery globe.

与此同时，细菌生命在全球水中传播开来。

He dedicated his life to communicating the wisdom he had gained in prison.

他毕生致力于传播他在监狱中获得的智慧。

Like the flu, laughter can spread easily among people. Often when we hear someone laughing in a crowded room or a packed train, for example, we start laughing too – even if we have no idea why.

像流感一样，笑声很容易在人群中传播。例如，当我们听到有人在拥挤的房间或挤满人的火车上大笑时，我们也开始大笑，即使我们不知道为什么。

A light year is the distance light travels in one year.

一光年是光在一年中传播的距离。

But the problem with tuberculosis, or TB for short, was that the disease is airborne – carried and spread in the air.

但是肺结核（简称TB）的问题在于，这种疾病是通过空气传播的——在空气中传播。

However, diseases have spread among human populations throughout history.

然而，纵观历史，疾病一直在人类群中传播。

So they’ve actually written the speech to make it easier to share on social media.

这样的演讲更利于在社中传播。

" And it's replacing the old song as it goes."

“它在传播过程中取代了老歌。”

The findings suggest that asymptomatic cases are important in the spread of the virus.

研究结果表明，无症状感染病例在病毒传播中非常重要。

A light year is the distance that light travels in one Earth year.

一光年是指光在真空中传播一年经过的距离。

Why is Omicron speeding through the population?

为何奥密克戎在人群中传播如此迅速？