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

同样，奶牛的瘤，就是她的，满了虫子。

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

像草或干草这样的在瘤中停留的时间更长，产生的量就会更多。

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

牛叶被发现可以减少瘤中细菌的数量，从而限制甲烷的产生。

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

瘤是最大的一个，它可以作存放和发酵的储存单元。

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

在第一部分， 称瘤， 微生分解草等纤维植，并释放出甲烷作副产品。

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中被称原生动的特定寄生虫来减少甲烷。