Most of the air that we breathe is Nitrogen, with a couple of other trace gases thrown in.

我们呼吸的大部分空气是氮气，还有其他几种微量气体。

Methane is an important trace gas in Earth's atmosphere, at less than 2 parts per million by volume.

甲烷是地球大气层中一种重要的痕量气体，体积小于百万分之二。

The atmosphere is, by volume, about 78% nitrogen, 21% oxygen, 1% argon of all things, and then an assortment of trace gases.

按体积计算，大气中氮气占78%，氧气占21%，氩占1%，还有各种各样的微量气体。

In recent decades, industrial activity has contributed to a huge spike in various trace gas emissions, fundamentally changing the air we all breathe.

近数十年，工业活动造成各种微量气体的排放暴增，从根本上改变了我们所呼吸的空气。

Dry air is a mixture of 21% oxygen, 78% nitrogen and 1% argon, with a few other trace gases such as carbon dioxide.

干燥的空气是21%的氧气、78%的氮气和1%的氩气的混合物，还有一些其他的微量气体，如二氧化碳。

" More power and less weight set NACHOS apart and make it an excellent candidate for future atmospheric trace gas missions, " Love said.

" 更大的功率和更轻的重量让NACHOS与众不同，使它成为未来大气微量气体任务的优秀候选设备。"

This small slice of air is composed of numerous small particles including pollen, fungal spores, and liquid droplets, alongside trace gases like methane and carbon dioxide.

空气的这一小部分包含了数种小型粒子，包括花粉、真菌孢子、液态飞沫，还有微量气体，如甲烷及二氧化碳。

On top of all that is its atmosphere, hundreds of kilometers deep, composed mostly of hydrogen, with a smaller amount of helium and a whole bunch of trace gases like methane and ammonia.

它们之上就是大气层，有几百千米厚，主要由氢、少量的氦和一大堆像甲烷和氨气这样的微量气体组成。