the first compartment of the stomach of a ruminant; here food is collected and returned to the mouth as cud for chewing
双语例句
The first two, known as the rumen, are essentially vast incubation chambers teeming with bacteria and protozoa. 头两个胃称为瘤胃，实际是充满了细菌与原生动物的大型培养室。
The first experiment studied on the effect of eliminating the anaerobic fungi onmetabolism and digestibility of rumen in three native filtrated goat given roughagediets with hay. 第一部分以三头装有永久性瘤胃瘘管的土种山羊为试验动物，研究了在青干草日粮条件下，去除瘤胃真菌对山羊瘤胃消化代谢的影响。
