Car Fumes can change the Brain in two hours汽车尾气能在两小时内改变大脑

高齐云

Air pollution2 can change our brain. It changes how parts of our brainconnect3 with other parts. Research shows this can happen in two hours. Aresearcher was surprised by his research. He said，“For many years， scientiststhought the brain may be protected4 from the bad effects5 of air pollution.”Hisstudy showed there was a connection between air pollution and thinking.

The study was on 25 adults. They took in car fumes in a laboratory6.Scientists took brain scans7 of them for two hours. The scans showed that thethinking networks8 in the brain changed. There were fewer connections betweenthe networks.

Another professor9 worried about how traffic10 pollution can change thenetworks in our brain. She said people should close car windows when in traffic.The brains of the 25 people were OK after they took in clean air.

空氣污染可以改变我们的大脑。它改变了我们大脑各部分与其他部分的联系方式。研究表明，这可以在两小时内发生。一位研究人员对他的研究感到惊讶。他说：“多年来，科学家们认为大脑可以免受空气污染的不良影响。”他的研究表明，空气污染和思维之间存在联系。

这项研究以25 名成年人为对象。他们在实验室里吸入了汽车尾气。科学家们对他们进行了两个小时的脑部扫描。扫描显示大脑中的思维网络发生了变化。网络之间的连接变少了。

另一位教授担心交通污染会改变我们大脑中的网络。她说人们在车流中应该关闭车窗。在吸入清新空气后，那25 个人的大脑恢复了正常。

Notes

1. fume 刺鼻；或有害的气；烟

2. pollution 污染；污染物

3. connect  使……连接；使……相通

connection 关系；联系；连接；接通

4. protect 保护；防护

5. effect 作用；影响

6. laboratory  实验室

7. scan 扫描；检查

8. network 网络；网状系统

9. professor 教授

10. traffic 路上行驶的车辆；交通