| 1. | Skin cells reproduce every ten hours .
皮肤细胞每10小时繁殖一次。 |
| 2. | Inbreeding depression may result .
可能引起近宗繁殖缺陷的产生。 |
| 3. | They bloom as thick as buttercups in june .
它们会跟六月的毛茛一样迅速繁殖。 |
| 4. | Bacteria will not breed in alcohol .
细菌不能在酒精内繁殖。 |
| 5. | They were maintained by normal self-pollination .
它们保持正常的自花授粉繁殖。 |
| 6. | The bluetongue virus replicates in the insect .
蓝舌病病毒在这种昆虫体内繁殖。 |
| 7. | Many animals breed in the spring .
许多动物都在春天繁殖。 |
| 8. | Trees propagate themselves by seeds .
树木借着种子繁殖。 |
| 9. | The weeds propagate themselves rapidly .
杂草繁殖极快。 |
| 10. | Sexual reproduction can bring about genetic commingling .
有性繁殖可取得杂交遗传。 |
