The reason is something called " reserve capacity."

原因与所谓的“储备能力”有关。

The reason is it needs to be short.

原因是它需要简短。

And for, when the reason is a noun.

而当原因是名词时，使用 for。

One of the reasons is the low cost.

其中一个原因是成本低。

The reason is as devastating as it is simple.

原因直截了当。

And the reason is it is the whole grain.

原因是它是全谷物甜点。

The reason is a microscopic organism called Toxoplasma gondii.

原因在于一种叫做刚地弓形虫的微生物。

The reason is for this lesson.

答案就是这节课的内容。

The reason is that you haven't eaten any vegetables.

因为你不吃蔬菜才会这样。

For some poor families, the reason is an economic one.

对于一些贫困家庭来说，原因是经济上的。

The reason is that you have a consonant right after.

原因是后面有一个辅音。

To, when the reason is a verb, is an action.

当原因是动词，是一个动作时，使用 to。

The reason is simple-unlike speech, writing provides a permanent record of the contract.

原因很简单。“写”下来的文件可以作为约定的永久备案，“说”的就不行。

The reason is that rich volcanic soil makes the land fantastic for farming.

原因是肥沃的火山泥使得这里的土地非常适合耕种。

The reason is, let's call it brain stress, is problematic.

原因便是——就让我们称之为大脑压力吧——它是有问题的。

The reason is that the culture has changed in the city.

原因是这座城市的文化已经改变了。

The reason is the high value of protein provided by quinoa.

原因是藜麦能提供高质量的蛋白质。

The reason is that the galaxies rotate faster than they should.

推理的根据是，星座自传的速度比料想的要快。

Well, I think the reason is closely related to speaking rate.

我认为这与语速密切相关。

The reason is that I am an entrepreneur, not a corporate person.

因为我是一个企业家而不是一个雇员。