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

同样，奶的瘤胃，也就是她的胃，也充满了虫子。

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

像草或干草这样的食物在瘤胃中停留的时间更长，产生的量也就会更多。

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

发现可以减少瘤胃中细菌的数量，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.

瘤胃是最大的一个，它可以作为食物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， 称为瘤胃， 微生物分解草等纤维植物，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.

其他添加剂也起了作用，比如脂肪酸，它通过降低碳水化合物含量和减少瘤胃中称为原生动物的特定寄生虫来减少甲烷。