英语语法分析

A major reason why many cancers are so dangerous is that they metastasize.

癌症的危险因素主要在于癌细胞转移。

"Those are the ones you want to catch," she said, "because they could metastasize and prove lethal."

她说：“那些是你们想要处理的，因为它们会转移和被证明是有致死性的。”

Younger women have fewer treatment options, she said. "Those types of breast cancer tend to metastasize (spread) early."

Perkins同意这一个观点，说道，年轻的女性缺少检查的选择，这些形式的乳癌早期会转移，有可能转移到脑部。