This is the poison that will actually end the tumor cell's life.

对肿瘤细胞而言是致命毒药。

A single cell's life is simple but limited.

单个细胞的生命很简单，但也很有限。

But a few rare mutations can destroy the genetic programs or break down the machinery that control a cell's life and death, giving it the power to divide uncontrollably.

但是一些罕见的突变可能破坏基因程序或破坏控制细胞生死的机制，使其有能力不受控制地分裂。