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

随着时间的推移，它们叶绿体，也就是行光合作用的器。

Today, every single plant has cells like this, full of chloroplasts and mitochondria.

今天，每一株植物都有这样的，充满叶绿体和线粒体。

Chloroplasts are found only in plant cells and contain chlorophyll.

叶绿体仅存在于植物内，而且含有叶绿素。

Plant cells also contain chloroplasts which are filled with a chemical called chlorophyll.

植物还包含叶绿体，面充满了一种叫做叶绿素的学物质。

Finally, let's look at the chloroplast.

最后是叶绿体。

Simple plant cells may have only one or two chloroplasts in them.

简单的植物可能仅有一个或两个叶绿体。

You won't find chloroplasts in animals — they're more of a plant thing. You wouldn't understand, Blobfish.

你在动物身上找不到叶绿体——它们更像是植物的组部分。你不会明白的，水滴鱼。

During this process, sunlight hits structures within a plant's cells called chloroplasts, which are packed with chlorophyll pigments.

在光合作用中，太阳光照射在植物一些叫做叶绿体的结构上，而这些叶绿体中含有大量的叶绿素色素。

It sucks the cell empty and digests most of its contents, but the chloroplasts remain intact.

它将吸空，并消耗其大部分物质，留下“叶绿体”完好无损。

This makes the chloroplasts able to sustain themselves for longer inside the slug.

这使得叶绿体能够在鼻涕虫体内维持更长时间。

Plants do this by using organelles called chloroplasts, which give them their bright colors and convert sunlight into food through photosynthesis.

植物通过“叶绿体”的体实现上述功能，“叶绿体”赋予它们鲜亮的颜色，并通过光合作用将阳光转为食物。

As incredible as this adaptation is, there are more than 70 species of slug that steal chloroplasts from their food.

如此令人难以置信的适应性，竟然有多达 70 多种鼻涕虫从食物中窃取叶绿体。

Taking a chloroplast and sticking inside of a cellis not enough to become photosynthetic.

获取叶绿体并粘在内部不足以行光合作用。

Chloroplasts engage in photosynthesis and are restricted to algae and plants.

叶绿体行光合作用，仅存在于藻类和植物中。

And we think chloroplasts got into plant cells in the same exact way.

我们推测叶绿体也是以同样的方式入植物的。

Chloroplasts need things that the algae provide to themthat animals shouldn't be able to do.

叶绿体需要藻类为它们提供的动物无法提供的东西。

So these are the mitochondria and the chloroplasts.

这些就是线粒体和叶绿体。

A chloroplast is the part of a plant cell where photosynthesis takes place, converting sunlight into food.

叶绿体是植物中行光合作用的部分，能将阳光转为食物。

Or in a chloroplast, ordered energy from the  Sun is used to pile up protons in one place.

或者在叶绿体中，来自太阳的有序能量被用来在一处堆积质子。

And at the end of these branches, we have these cul de sacs that are loaded with chloroplasts.

在这些分支的尽头，我们有这些装有叶绿体的死胡同。