So, by teasing out the key differences between normal and malignant cells, doctors may someday be able to design tests to pick up cancer in its earliest stages.

• 于是，通过弄清楚正常细胞与癌变细胞之间的主要差别，医生们将来某一天可能设计出测试方式，以挑选出处于早期阶段的癌。