And of course, there is cow flatulence: as cattle digest grass or grain, they produce methane gas, of which they expel up to 200 L a day.

当然还有牛的肠胃气涨：当牛消化草或谷物时，每天产生超过200升的甲烷气体。

youdao

And of course, there is cow flatulence: as cattle digest grass or grain, they produce methane gas, of which they expel up to 200 L a day.

当然还有牛的肠胃气涨：当牛消化草或谷物时，每天产生超过200升的甲烷气体。

youdao