But the contrails also stop heat coming up from the ground from escaping into space.

但凝结尾也阻止地面热量逃逸到太空中。

Social media video showed contrails from two Patriot missiles fired at the jet.

从社媒录像中的行云可以看出，两者导弹击落了战机。

On any given day odds are you'll see several contrails, some slowly spreading out to form high, cirrus clouds.

每天我们都有机会看到航迹云，有些会慢慢散开形成高空卷云。

This improved understanding of how to manage contrails presents an opportunity for the aviation industry to reduce its global environmental impact.

更好地理解凝结尾管理，为航空业提供了减少全球环境影响的机会。

This process allows contrails to warm the planet about as much as the carbon dioxide emissions from aircraft.

这一过程使凝结尾对地球的加温程机排放的二氧化碳相等。

Think of it as a silver lining in those contrail clouds.

将其想象成机云中的银线吧。

Contrails are made up of ice crystals that form when aircraft engines emit exhaust that hits the cold air.

凝结尾由冰晶组成，而冰晶则由机引擎排放的废气遇冷空气凝结而成。

Some contrails can form clouds that last for up to 18 hours.

有些凝结尾可以形成持续18小时不散的云。

Such a change could be achieved if aircraft avoided flying in the thin layers of humidity where contrails form.

如果机避免在形成凝结尾的潮湿薄层中行，这一改变就可以实现。

There were no jet contrails in the sky.

天空中没有喷气式机的尾迹。

" So if you look up in the sky, you probably see at some point an aircraft, and behind that aircraft are white fluffy streaks. And that's what we call a contrail."

“所以，当你抬头望天，或许会在某一刻瞥见一架机，而在那机身后，拖曳着白色的蓬松痕迹。那就是我们所说的尾迹云。”

Since its introduction in 1969, the 747's  unique shape and quadruple contrails have become a familiar sight in the  skies.

自 1969 年推出以来，747 独特的外形和四条尾迹已成为天空中常见的景象。

Sometimes, when scuba diving, I would look up from my clipboard and just see contrails of parrotfish poop raining down.

有时， 当我潜⽔时，会从记事板上抬头看到鹦鹉鱼的大便像雨一样落下。

But what if the contrails that contribute the most to warming could be eliminated? Such a change could be achieved if aircraft avoided flying in the thin layers of humidity where contrails form.

但如果能消除那些对升温贡献最大的尾迹云呢？这一改变可以通过机避开在形成尾迹云的高湿薄层中行来实现。