科技动态:4000年前的人类祖先

Scientists have captured a fascinating snapshot of one of our ancestors who walked the earth about 4,000 years ago.

科学家今日绘制了一副地球上400年前人类祖先的画像。

Well, look at that, they used a genetic¹ time machine of sorts to get the picture of what he might looked like.

看看这副图，科学家们应用了基因时间分析机来获得人类祖先的画像。

Now they just had to analyze² four frozen strands³ of hair from the ancient man who they say lived in Greenland.

他们只是分析了格陵兰的早期人类的四根毛发就获得了这幅画像。

They say DNA⁴ sequencing shows he had brown hair, was probably going bald and had type A positive blood.

科学家们表示，根据头发提供的DNA排序，这名人类祖先是棕发，可能谢顶，A型血。

Interesting.

真有趣。

Very interesting. Not bald, though receding⁵ hairline.

非常有趣，这张图显示不是谢顶，只是发迹线靠后。

That's an insult to people with receding hairlines everywhere.

这讽刺了世界各地谢顶的人。

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 analyze   

vt.分析，解析 (=analyse)

参考例句：

• We should analyze the cause and effect of this event.我们应该分析这场事变的因果。
• The teacher tried to analyze the cause of our failure.老师设法分析我们失败的原因。

3 strands   

n.（线、绳、金属线、毛发等的）股( strand的名词复数 )；缕；海洋、湖或河的)岸；（观点、计划、故事等的）部份v.使滞留，使搁浅( strand的第三人称单数 )

参考例句：

• Twist a length of rope from strands of hemp. 用几股麻搓成了一段绳子。 来自《简明英汉词典》
• She laced strands into a braid. 她把几股线编织成一根穗带。 来自《简明英汉词典》

4 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。

5 receding   

v.逐渐远离( recede的现在分词 )；向后倾斜；自原处后退或避开别人的注视；尤指问题

参考例句：

• Desperately he struck out after the receding lights of the yacht. 游艇的灯光渐去渐远，他拼命划水追赶。 来自辞典例句
• Sounds produced by vehicles receding from us seem lower-pitched than usual. 渐渐远离我们的运载工具发出的声似乎比平常的音调低。 来自辞典例句