If there is too much photosynthesis occurring, then the water becomes full of oxygen during the daytime.

如果产生太多光合用，那白天水中就会充满氧气。

You might recognize this process as photosynthesis.

你可能会把这个过程称光合用。

Photosynthesis is the best carbon-capturing mechanism we have.

光合用是目前最好的碳捕获机制。

To understand why, think back to photosynthesis and chlorophyll.

想知道，请回想一下光合用和叶绿素。

This whole process is called photosynthesis.

整个过程称光合用。

Do you remember how photosynthesis works?

你还记得光合用是如何工的吗？

Mitochondria basically reverse photosynthesis, in a similarly complex process.

以类似的复杂过程， 基本上逆转了光合用。

What is needed for photosynthesis to take place? Sophie.

光合用的反应物是？苏菲。

And this is essentially tiny plants that do photosynthesis.

这种微藻就是能进行光合用的微型植物。

It's the chemical process of photosynthesis.

这就是光合用。

Photosynthesis takes sunlight and stores solar energy in chemical bonds.

的光合用吸收了太阳能并把它存储在化学键中。

Like, remember when I said plants use sunlight for photosynthesis?

还记得我说过植物利用阳光进行光合用吗？

Plants have a system called photosynthesis which provides us with oxygen.

植物有一个名叫“光合用”的系统，它能够产生氧气。

Nitrogen is needed for proteins, DNA and the chlorophyll that let plants perform photosynthesis.

氮是蛋白质、DNA和让植物进行光合用的叶绿素所必需的。

Over time, that evolved into a chloroplast, the organelle that does photosynthesis.

随着时间的推移，它们进化成叶绿，也就是进行光合用的细胞器。

Then comes the chlorophyll-rich palisade mesophyll, where the bulk of photosynthesis occurs.

然后是富含叶绿素的掌状中叶，大部分的光合用在这里发生。

It would have needed sunlight for that so that photosynthesis could begin.

它需要阳光，这样才能进行光合用。

Zooxanthellae supply their coral hosts with food, which they produce through photosynthesis.

虫黄藻通过光合用来合成食物，并将其贡献给珊瑚宿主。

To understand the new breakthrough, it is important to know how photosynthesis works.

要想理解这个新的突破，重点要了解光合用如何运。

Instead, they modified the DNA in the chloroplasts-organelles responsible for photosynthesis, not reproduction.

相反，他们修改了叶绿中的DNA，叶绿是负责光合用而不是繁殖的细胞器。