英语语法分析

Your personal history of precancerous breast lesions.

你的乳腺癌癌前病变个人史。

Taking medicines to treat a precancerous condition or to keep cancer from starting.

使用药物治疗癌前病变或预防癌症。

Other studies have found that the more water subjects drank, the fewer precancerous colon polyps they had.

其它研究则发现，饮水越多，出现具有癌症前期特征的结肠息肉的机率就越小。