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)
Each of us harbors a unique collection of bacteria, on our outsides and our insides. Now, scientists are finding that the bacteria you get at birth may depend on how you got here. Because babies born vaginally have a different set of microbes than those that arrive by Caesarean-section. The work appears in the Proceedings1 of the National Academy of Sciences.
The uterus is a sterile2 environment. So, in the womb, babies don’t have any bacteria to call their own. It’s only once they enter the world that they begin to collect the microbes that will colonize3 their bodies and help shape their immunity4. But where do these bugs5 come from?
Scientists sampled the bacterial6 flora7 from nine newborns and their mothers. And they found that babies who passed through the birth canal harbored bacteria that matched their moms’ vaginal microbiota. Whereas babies delivered by C-section had microbes typically found on the skin.
The scientists say the results could help explain why babies that arrive by C-section are more susceptible8 to certain infections. Vaginal microbes might be quicker than skin bugs at snagging all the best bodily real estate, a land grab that could keep harmful infections from getting a foot in the door.
Thanks for the minute for Scientific American’s 60-Second Science. I’m Karen Hopkin.
1 proceedings | |
n.进程,过程,议程;诉讼(程序);公报 | |
参考例句: |
|
|
2 sterile | |
adj.不毛的,不孕的,无菌的,枯燥的,贫瘠的 | |
参考例句: |
|
|
3 colonize | |
v.建立殖民地,拓殖;定居,居于 | |
参考例句: |
|
|
4 immunity | |
n.优惠;免除;豁免,豁免权 | |
参考例句: |
|
|
5 bugs | |
adj.疯狂的,发疯的n.窃听器( bug的名词复数 );病菌;虫子;[计算机](制作软件程序所产生的意料不到的)错误 | |
参考例句: |
|
|
6 bacterial | |
a.细菌的 | |
参考例句: |
|
|
7 flora | |
n.(某一地区的)植物群 | |
参考例句: |
|
|
8 susceptible | |
adj.过敏的,敏感的;易动感情的,易受感动的 | |
参考例句: |
|
|
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。