| 1. | Suckling is an instinct in mammals .
哺乳是哺乳动物的本能。 |
| 2. | A whale is a kind of mammal .
鲸是一种哺乳动物。 |
| 3. | Lactation is the final phase of the reproductive cycle of mammals .
泌乳是哺乳动物繁殖周期的最后阶段。 |
| 4. | Mammals damage orchards on every continent by girdling roots .
哺乳动物在各地对种子园的危害是咬断根系。 |
| 5. | He lists three types of steroid sex hormones that function in mammals .
他列举在哺乳动物中起作用的三种类固醇性激素。 |
| 6. | Fish and reptiles are more likely to change sex than are mammals or birds .
鱼和爬行动物一般要比哺乳动物或飞禽更容易改变性别。 |
| 7. | Most mammalian cells contain multiple species of dna dependent dna polymerases .
大部分哺乳动物细胞均含有多种依赖DNA的DNA聚合酶。 |
| 8. | The citrate synthase of mammalian tissues have been shown to be inhibited by atp .
有人已经证实哺乳动物组织的柠檬酸合成酶受ATP的抑制。 |
| 9. | Those in mammalian cells, the cerebrosides and gangliosides, may perform similar functions .
在哺乳动物细胞中脑磷脂和神经节苷脂可能执行同样的功能。 |
| 10. | The main groups of vertebrates are: fishes, amphibians, reptiles, birds and mammals .
脊椎动物的主要种类是鱼类，两栖动物，爬行动物，鸟类和哺乳动物。 |
