| 1. | Suckling is an instinct in mammals .
哺乳是哺乳动物的本能。 |
| 2. | These discoveries have raised new questions concerning the origin and distribution of early mammals .
这些发现提出了有关早期哺乳动物的起源与分布的新问题。 |
| 3. | The scientist has made a pointed comparison between suspensors of plant embryos and mammalian trophoblasts .
这位科学家把植物胚的胚柄与哺乳动物的滋养层做了直接的比较。 |
| 4. | The report is on mammalian thermoregulation
那份报告是有关哺乳动物的体温调节。 |
| 5. | A corresponding organ in other mammals
胸脯其它哺乳动物的相应器官 |
| 6. | The young of mammals are suckled on milk secreted by the mother ' s mammary glands
哺乳动物的幼仔是吸乳的，其乳汁母乳腺分泌的。 |
| 7. | The animals unanimously vanished from the mammal ' s room furnished with spanish furniture
动物一齐从配备有西班牙家具的哺乳动物的房间消失。 |
| 8. | This unique situation was the starting point for the great evolutionary success of the mammals
这个独特的情况是起点为哺乳动物的巨大演变成功。 |
| 9. | The mammiferous testis perform important functions of producing sperm and secreting male hormone
雄性哺乳动物的睾丸具有生精和分泌雄性激素等重要的功能。 |
| 10. | To do so , they collected the relevant data for 35 species of long - lived birds and mammals
为了得到答案，他们收集了35种寿命长的鸟类和哺乳动物的相关数据。 |
