Same way, the cow's rumen, her stomach, is full of bugs.

同样，奶牛瘤胃，就是她胃，充满了虫子。

And oregano was found to reduce the number of bacteria in the rumen to limit methane production.

牛至叶被发现可以减少瘤胃中细量，从而限制甲烷产生。

Foods like grass or hay stay in the rumen longer and produce more of it.

像草干草这样食瘤胃中停留时间更长，产生量就会更多。

The largest one, the rumen acts sort of as a storage unit where food can sit and ferment.

瘤胃是最大一个，它可以作为食存放和发酵储存单元。

Or in the rumen of the cow.

牛瘤胃中。

It's very clear for ruminants, which are animals that have a rumen that eat grass.

对于反刍动来说，这一点非常清楚，反刍动是指有瘤胃并以草为食动。

All the cells that live in the rumen of a cow for example.

例如，所有生活牛瘤胃中细胞。

In the first part, called the rumen, microbes break down fibery plants like grass and give off methane as a byproduct.

第一部分， 称为瘤胃， 微生分解草等纤维植，并释放出甲烷作为副产品。

Other additives work too, like fatty acids which reduce methane by lowering the carbohydrate content and reducing a specific parasite in the rumen known as protozoa.

其他添加剂起了作用，比如脂肪酸，它通过降低碳水化合含量和减少瘤胃中被称为原生动特定寄生虫来减少甲烷。

And so if we think about the rumen of a cow, a cow is going to have many multiple parts inside their stomach.

而如果我们想想牛瘤胃，牛胃里有很多部分。

Well the fungi are important, even though they make something like 5% of the living things in the rumen, they can breakdown specific bonds between the lignin inside the cellulose.

真很重要， 尽管它们瘤胃中活体占比只有大约5%，但它们能够分解纤维素内部木质素之间特定化学键。