n.瘤胃(反刍动物的第一胃)
Goats use rumen, reticulum and omasum to digest silage. 羊利用瘤胃、蜂巢胃、重瓣胃来消化草料。
The cow gets rid of the gases formed in the rumen by belching at frequent intervals. 牛靠经常的打嗝以释放瘤胃中形成的气体。
