| 1. | The great apes pair and rear their young .
巨猿交配并抚育它们的子息。 |
| 2. | A mule is a cross between a horse and an ass .
骡是马和驴交配而生的杂种。 |
| 3. | Inbreeding is crossing between close relations .
近亲繁殖是亲缘很近的亲属之间的交配。 |
| 4. | Mating blackbirds will defend their territory against intruders .
黑鹂交配时不容许地盘受到外来的滋扰。 |
| 5. | It begets at least seven standard type offspring from such matings .
这类交配中生下至少七个标准型后代。 |
| 6. | Cases are known where trioecy provides for an optimal mating system .
众所周知，单全异株为最适交配系统打下基础。 |
| 7. | The mating system can be changed in a quick and simple manner, from monoecy to dioecy .
用较快而简洁的方法使交配系统从雌雄同株变成雌雄异株。 |
| 8. | The males could not cue in on the females and mating success was extremely low .
雄虫不能对雌虫的信号发出反应，以致大大地降低了交配的可能性。 |
| 9. | The desire and ability to carry out a complete act of mating is typical of sexually mature males .
性欲和进行完整的交配动作的能力是公畜性成熟的象征。 |
| 10. | The possibility of switching from one mating type to the other is probably open to all population .
或许所有种群都有从一种交配类型演变到另一种交配类型的可能性。 |
