It's the coal that provides the molecule, creating the reaction to get rid of the oxygen.

煤矿的分子产生了去除气的反应。

What percentage of Earth's oxygen is produced by the Amazon rainforest?

由马逊雨林产生的气占全球气量的比重多少呢？

The primary method of generating breathable oxygen onboard the ISS revolves around oxygen generators.

在国际空间站上产生可呼吸气的主要方法围绕着气发生器。

They say forests, including the Amazon, absorb about the same amount of oxygen as they produce.

他们认为森林（马逊）吸收它们产生的气那么多。

So how do these oxygen generators produce breathable oxygen?

那么这些气发生器如何产生可呼吸的气的呢？

So how did eating the oxygen-making bacteria create more oxygen?

那么，食用产细菌如何产生更多气的呢？

Even today, organisms that don't use oxygen to make energy are almost all just single, microscopic cells.

即使在今天，不利用气产生量的生物体几乎都单一的微观细胞。

Cyanobacteria are tiny microorganisms that produce oxygen using sunlight as well as water and carbon dioxide.

蓝细菌利用阳光、水和二化碳产生气的微小微生物。

Rainforests produce large amounts of oxygen, cloud forests produce comparative amounts of water.

热带雨林产生大量的气 云森林产生相当数量的水。

Currently, the ISS cannot pressurize generated  oxygen to support astronauts on spacewalks.

目前，国际空间站无法对产生的气进行加压以支持宇航员进行太空行走。

Also, as trees age, they begin to absorb  less CO2 and produce less oxygen.

此外，随着树木年龄的增长，它们开始吸收更少的二化碳并产生更少的气。

So phytoplankton get more light, photosynthesize more, and make more oxygen.

所以浮游植物得到更多的光， 进行更多的光合作用， 产生更多的气。

Before they came along, any oxygen that was produced was being used up at the oceans' surface.

在它们出现之前，产生的所有气都在海洋表面消耗殆尽。

The weakened fall leaf then becomes vulnerable to the highly destructive effects of the oxygen created by the excited chlorophyll molecules.

脆弱的秋叶随后变得容易受到激发的叶绿素分子产生的气的破坏性影响。

This area is known as the lungs of southern Chile because the forests are so rich and producing so much oxygen.

这个地区被称为智利南部的肺，因为森林非常丰富，产生如此多的气。

The more that we get rid of our natural green spaces, the less we're able to have that oxygen naturally generated in our environment.

我们越放弃自然的绿色空间，我们环境中自然产生的气就越少。

Well, the oxygen that comes out of that process is a byproduct, or something that's made by the nature of the process, not on purpose.

这个过程中产生的气副产品，或者说这个过程的自然产物，不故意的。

Scientists have learned from past biosphere experiments that some kinds of building materials, like concrete, inhibit oxygen production so you'd want to avoid those.

科学家们从过去的生物圈实验中了解到， 某些建筑材料（ 例如混凝土）会抑制气的产生， 因此您应该避免使用这些材料。

By extracting and utilizing the water, astronauts can generate oxygen for breathing, produce rocket propellant, and even sustain agriculture without soil through a technique called hydroponics.

通过提取和利用水，宇航员可以产生供呼吸的气，生产火箭推进剂，甚至通过一种叫做水培法的技术来维持农业。

It has a neutron in its nucleus as well as the hydrogen defining singleton, proton, Like ordinary hydrogen deuterium can react with oxygen to yield water known.

它的原子核中有一个中子以及氢定义单子， 质子，像普通的氢氘一样可以与气反应产生已知的水。