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- polyestrous mammals 多发情哺乳动物
- polyestrous mammal 多发情哺乳动物
- A whale is no less a mammal than a horse is. 鲸鱼和马一样都是哺乳动物。
- The whale is the largest mammal in creation. 鲸是世上最大的哺乳类动物。
- A corresponding organ in other mammals. 胸脯其它哺乳动物的相应器官
- In brief, mammals are warm-blooded, lung-breathing, hairy vertebrates. 简言之，哺乳动物是温血、肺呼吸和多毛的脊椎动物。
- Most wild carnivorous mammals are monestrous. 大多数肉食野生动物都是每年发情一次。
- The analogous part of the body on certain mammals. 屁股某种哺乳动物身体上功能相似的部分
- Whale is not a fish; it is a mammal. 鲸不是鱼类，它是一种哺乳动物。
- Did you know that whales are mammals? 您知道鲸鱼是哺乳动物吗?
- Man and most other mammals are viviparous. 人和其他大多数哺乳动物都是胎生的。
- To draw milk from a female mammal. 挤奶从雌性哺乳动物身上挤奶
- Other seed-eating mammals may become troublesome. 其它取食种子的哺乳类也会引起麻烦。
- Whales are mammals that live in the sea. 鲸是生活在海洋中的哺乳动物。
- The branch of zoology that deals with mammals. 哺乳动物学动物学中研究哺乳动物的一个分支
- The fur of one of these carnivorous mammals. 这种食肉哺乳动物的毛
- Whales fall under the class of mammals. 鲸属于哺乳类动物。
- Among mammals whales have the greatest mass. 哺乳动物中以鲸鱼最大。
- The bat is the only mammal that can fly. 蝙蝠是唯一会飞的哺乳动物。
- When did mammals appear on the earth? 地球上的哺乳动物起源于何时?
