n.反刍动物
adj.反刍的,沉思默想的
The cow is a ruminant.
牛是反刍动物.
The teeth of ruminant animals are specialised.
反刍家畜的牙齿很特殊。
The teeth of the ruminant are specialised, unlike those of a carnivorous animal.
反刍家畜的牙齿很特殊, 完全不同于肉食动物.