英语新闻听写 一项新型验血技术或许可以发现早期癌症

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。

1 genetic   

adj.遗传的，遗传学的

参考例句：

• It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
• Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。

2 DNA   

(缩)deoxyribonucleic acid 脱氧核糖核酸

参考例句：

• DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
• Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。

3 genes   

n.基因( gene的名词复数 )

参考例句：

• You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因，所以能够活得很长。 来自《简明英汉词典》
• Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪

4 rendering   

n.表现，描写

参考例句：

• She gave a splendid rendering of Beethoven's piano sonata.她精彩地演奏了贝多芬的钢琴奏鸣曲。
• His narrative is a super rendering of dialect speech and idiom.他的叙述是方言和土语最成功的运用。

5 colon   

n.冒号，结肠，直肠

参考例句：

• Here,too,the colon must be followed by a dash.这里也是一样，应当在冒号后加破折号。
• The colon is the locus of a large concentration of bacteria.结肠是大浓度的细菌所在地。

6 previously   

adv.以前，先前（地）

参考例句：

• The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
• Let me digress for a moment and explain what had happened previously.让我岔开一会儿，解释原先发生了什么。