时间:2018-12-28 作者:英语课 分类:初学者听力文摘精选


英语课

Baby's Bacteria Related to Birth Method

出生方式决定婴儿携带什么样的细菌



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 Proceedings 1 of the National Academy of Sciences.

我们每个人身上都有着一套独特的细菌群落,不管在体外还是体内。如今,科学家们发现你出生时携带的细菌有可能取决于你是如何降临人世的。因为,阴道分娩婴儿和剖腹产婴儿有着完全不同的微生物。这一研究成果发表在美国《国家科学院院刊》上。



The uterus is a sterile 2 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 colonize 3 their bodies and help shape their immunity 4. But where do these bugs 5 come from?

子宫是个无菌的环境。因此,婴儿在子宫内还没有任何属于自己的细菌。只有当他们出生后才开始携带微生物,这些微生物在婴儿身上寄生繁衍,帮助他们塑造免疫系统。



Scientists sampled the bacterial 6 flora 7 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.

科学家们对9名新生儿和他们的母亲进行了菌落取样。他们发现,产道分娩的婴儿所携带的细菌与他们的母亲阴道里的微生物相配。而剖腹产婴儿所携带的细菌是常见于皮肤上的细菌。



The scientists say the results could help explain why babies that arrive by C-section are more susceptible 8 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.

科学家们表示,研究结果可能有助于解释为何剖腹产婴儿更易受到某些感染。阴道微生物或许比皮肤细菌能更快地抢到人体上的最佳“地盘”,这位“地产大亨”能将有害感染一脚踢开,不给它们可趁之机。



1 proceedings
n.进程,过程,议程;诉讼(程序);公报
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
2 sterile
adj.不毛的,不孕的,无菌的,枯燥的,贫瘠的
  • This top fits over the bottle and keeps the teat sterile.这个盖子严实地盖在奶瓶上,保持奶嘴无菌。
  • The farmers turned the sterile land into high fields.农民们把不毛之地变成了高产田。
3 colonize
v.建立殖民地,拓殖;定居,居于
  • Around 700 Arabs began to colonize East Africa.公元700年阿拉伯人开始把东非变为殖民地。
  • Japan used to colonize many countries in Asia.日本曾经殖民过许多亚洲国家。
4 immunity
n.优惠;免除;豁免,豁免权
  • The law gives public schools immunity from taxation.法律免除公立学校的纳税义务。
  • He claims diplomatic immunity to avoid being arrested.他要求外交豁免以便避免被捕。
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
  • All programs have bugs and need endless refinement. 所有的程序都有漏洞,都需要不断改进。 来自《简明英汉词典》
  • The sacks of rice were swarming with bugs. 一袋袋的米里长满了虫子。 来自《简明英汉词典》
6 bacterial
a.细菌的
  • Bacterial reproduction is accelerated in weightless space. 在失重的空间,细菌繁殖加快了。
  • Brain lesions can be caused by bacterial infections. 大脑损伤可能由细菌感染引起。
7 flora
n.(某一地区的)植物群
  • The subtropical island has a remarkably rich native flora.这个亚热带岛屿有相当丰富的乡土植物种类。
  • All flora need water and light.一切草木都需要水和阳光。
8 susceptible
adj.过敏的,敏感的;易动感情的,易受感动的
  • Children are more susceptible than adults.孩子比成人易受感动。
  • We are all susceptible to advertising.我们都易受广告的影响。
学英语单词
alternate sector cylinder
anaphones
Aramaics
beckonest
bescribble
bio feedback
blast freezer
breathalyser,breathalyzer
brim over
Brusand
capital outlays
Cardenadijo
channel-check handler
chevron weave
cholelithiasis
closed amputation
coarse-grained soil filler
contact-type instrument
cooold
default of apperance
dewatering ditch
dielectric mirror
drawabilities
dripdry
drive shaft of transmission
due at
dysembryomas
East District
electrochromic display
Enguri
equipotentialities
external buoyancy
finedrawn
fineness of gold
fire-effected
first coat of plaster
forecast of cash position
Gauss plane coordinate system
giant armadillo
granular membrane
growes
horizontal centering
horizontal lode
horned circuit breaker
hyssop
in-pile loop test
in-rudder
interevent
intermarkets
ISDB-S
Java Champion
jodels
khalkidhiki (chalkidiki)
khor
leader slantable angle
liquid phase chromatography
loungecore
low-stop filter
lower crust
make a swoop at
making people
metadiagenesis
meter display
middle scalene muscle
mo-fo
Nelson, Estrecho
Neuravensburg
notify to
off return memory
offside lay
optics of polarized light
outhousing
overenthusiastic
oxfendazole
paul langerhans
pianic osteoperiositis
preponderantly
pyridine-4-carboxylic acid
rarish
ratchet casing bushing
recessed pointing
regenerative feed system
rudder deflection
rust inhibitors
sacramental manductions
scolopocryptops melanostomus
security right in the goods
seed pearl
semitransparent mirror splitter
sepsis albopunctata
statistic test
stiff shoulders
sub-funds
suspended pedal
Transkeian
travelmates
twopenny tube
vertical panning
vertically stacked loops
wave scatter diagram
whatever creams your twinkie
White L.