| 1. | Normal cells show a finite life span .
正常细胞显示有限的生命期。 |
| 2. | The cancer cells divide much more rapidly than the normal cells .
癌细胞的分裂比正常细胞快得多。 |
| 3. | A normal cell produces only a minute amount of its own cholesterol .
一个正常细胞只为自己制造极微量的胆固醇。 |
| 4. | Normal cells show an extraordinarily precise regulation of their growth .
正常细胞对它们的生长有着极其严密的控制。 |
| 5. | Fortunately, the tumor cells are more susceptible to the drugs than normal cells .
幸运的是，癌细胞比正常细胞更容易受到药物的影响。 |
| 6. | First ， we need to understand how the normal cell controls itself
首先，我们需要知道细胞是如何控制自己。 |
| 7. | Parselenium - e ? provides double antioxidant protection and promotes normal cell growth
硒质维他命e片提供双重抗氧化保护，维持细胞正常生长。 |
| 8. | The researchers began by removing two genes from a vaccinia virus that are necessary for its growth in normal cells
研究人员们首先将痘苗病毒中在正常细胞中生长所必须的两个基因去除。 |
| 9. | And because they cause less damage to normal cells , monoclonals fight cancer without making people so sick
由于单克隆抗体对正常的细胞造成的伤害较小，在治疗癌症时不会令病人感到不舒服。 |
| 10. | The service , which begi monday , has one drawback : it co umes as much battery power as normal cell phone rings
此项服务于7月7日开通，但它目前的一个缺点就是耗电量相当于播放一般手机铃声。 |
