在线英语听力室

英语新闻听写 科学家发现左撇子的真正原因

时间:2020-07-28 06:31:24

搜索关注在线英语听力室公众号:tingroom,领取免费英语资料大礼包。

(单词翻译)

About 10% of the population is left-handed.

大约10%的人口是左撇子。

There have been several theories over the years about why some people favour their left hand.

为什么有些人喜欢用左手,关于这个问题,多年来已经有不少理论。

A study from last year has shown that it might be nothing to do with your brain.

去年的一项研究表明,这可能与大脑无关。

Rather, it could be determined1 by your spinal2 cord while you are in the womb.

相反,这可能在出生前就由脊髓决定了。

Research which was led by scientists from the Netherlands and South Africa found that gene3 activity in the spinal cord is already asymmetrical4 in the womb, and this could be what causes left or right-handedness.

荷兰和南非的科学家们研究发现,脊髓中的基因活动在子宫中已经不对称,这可能是导致左或右利的原因。

While the baby is growing in the womb, up until about 15 weeks, the motor cortex and the spinal cord are not yet connected, but right or left-handedness is already decided5.

胎儿在子宫里生长的时候,直到大约15周,运动皮质和脊髓才相互连接,但是这时喜欢用哪只手已成定局。


分享到:


点击收听单词发音收听单词发音  

1 determined duszmP     
adj.坚定的;有决心的
参考例句:
  • I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
  • He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。
2 spinal KFczS     
adj.针的,尖刺的,尖刺状突起的;adj.脊骨的,脊髓的
参考例句:
  • After three days in Japan,the spinal column becomes extraordinarily flexible.在日本三天,就已经使脊椎骨变得富有弹性了。
  • Your spinal column is made up of 24 movable vertebrae.你的脊柱由24个活动的脊椎骨构成。
3 gene WgKxx     
n.遗传因子,基因
参考例句:
  • A single gene may have many effects.单一基因可能具有很多种效应。
  • The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
4 asymmetrical gO7ye     
adj.不均匀的,不对称的
参考例句:
  • Most people's faces are asymmetrical.多数人的脸并不对称。
  • Folds may be gentle and symmetrical,or sharp and asymmetrical.褶皱可以是平缓而对称的,也可以是陡峭而非对称的。
5 decided lvqzZd     
adj.决定了的,坚决的;明显的,明确的
参考例句:
  • This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。

本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎 点击提交 分享给大家。