英语新闻听写 一项新型验血技术或许可以发现早期癌症

（单词翻译）

A new genetic¹ blood test might pave the way for detecting early stage cancers that often prove fatal when caught too late. The test scans blood for DNA² fragments released by cancerous tumors.

一项新型验血技术或许可以发现早期癌症，这些癌症往往因发现太晚而导致患者死亡。该验血能扫描出血液中癌性细胞释放出来的DNA片段。

By reviewing these DNA fragments for mutations found in 58 "cancer-driver" genes³, the blood test detects many early stage cancers without rendering⁴ false positives for healthy people. The test detected stage 1 or 2 colon⁵, breast, lung or ovarian cancers between 59 percent and 71 percent of the time when assessing 200 patients previously⁶ diagnosed with cancer. The test also proved capable of screening out cancer-free people.

通过检验58种“致癌”基因中的突变DNA片段，这项验血技术能够检测出很多早期癌症，并且没有误诊健康人士。在对200名已确诊患有癌症的人进行检测时，它检测出1期或2期结肠癌、乳腺癌、肺癌或卵巢癌的概率在59%到71%。这项技术还能够筛选出无癌人士。