And, there are other frequently dividing cells in your body like skin cells, gut cells, and blood cells.

身体里还有其他时常分裂的细胞，比如皮肤细胞，肠细胞，和血细胞。

That's because the rapidly dividing cells can develop additional mutations that eventually make these growths expand beyond the basement membrane and invade neighboring tissues.

这是因为快速分裂的细胞极易发生突变，最终浸润超过基膜，侵入周围组织。

The bone marrow contains lots of rapidly dividing cells, which generate about 6 to 7 trillion new red blood cells every month.

骨髓中含有许多快速分裂的细胞，每个月产生约6至7万亿个新的红细胞。

The cells lining the colon and rectum are constantly dividing, and typically when there's an overgrowth of tissue it's benign, but some can become malignant, meaning that the dividing cells can start invading nearby tissues over time.

排列在结肠、直肠上的细胞不断分裂，通常增生物都是良性的，但有恶变可能，即这些分裂活跃的细胞可能逐渐开始侵犯周围组织。