时间:2019-02-16 作者:英语课 分类:英语听力广播—Listening


英语课

 【英文原文】


Most people believe that regular hand-washing is the best way to prevent infections. And they’re right: hand-washing does prevent certain infections, but too much washing can actually help some infections along. What’s going on?
Right now, there are millions of bacteria from hundreds of different species happily residing on your hands, not to mention your teeth, gums, eyes and ears. These bacteria are either transients or residents. Washing your hands helps remove transient bacteria that are just visiting from foreign places like the sink, doorknob and even other people’s hands. Washing shouldn’t remove your hands’ own resident bacteria, though.
While it’s hard to imagine your hands as a bacterial 1 homeland, these residents are perfectly 2 normal and are important in maintaining your health. They help prevent transient bacteria from settling in, and each resident keeps other residents from overpopulating.
If you scrub your skin too frequently, especially with anti-bacterial soap, you could upset resident bacteria, leading to the overpopulation of certain species and local skin infections. Scrubbing away residents might also let transients move in and cause disease. Finally, over washing could break down the skin itself. This allows harmless skin residents to go beneath the skin, where they can become dangerous transients.
So, while a good wash with soap and water is still a great idea, overwashing might lead to some unpleasant symptoms, not to mention inflamed 3 and unsightly hands.
 

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。
adv.完美地,无可非议地,彻底地
  • The witnesses were each perfectly certain of what they said.证人们个个对自己所说的话十分肯定。
  • Everything that we're doing is all perfectly above board.我们做的每件事情都是光明正大的。
adj.发炎的,红肿的v.(使)变红,发怒,过热( inflame的过去式和过去分词 )
  • His comments have inflamed teachers all over the country. 他的评论激怒了全国教师。
  • Her joints are severely inflamed. 她的关节严重发炎。 来自《简明英汉词典》
学英语单词
a-wreck
aaea
activities applets
Auscam
auto oscillations
Bermuda green
bleeding of steam
bogles
cantao ocellatus
clay content
common-cell sorting
continuous sterilizer
corporate incest
crotona
Dacheng
dalls
dark as night
death gratuities
deflation policy
Dieppe
Dracunculus persarum
ecological tolerance
enter the country
essmatic
ex-felon
fat diabetes
fore-stomaches
fragmentizing
game go
generalized log-gamma regression model
genteel
guard plate
Hergilsey
hydraulic structure grade
Icerya purchasi Maskell
ideal instant
incremental servodrive
interdiction model
international-minded
Isles of Scilly County
kac
klystron reflector
Knudsen cell
kuepper
large class
low-pressure float valve
main pull rod
Microsoft SQL Server
microsporidian
monochloro-acetyl chloride
naked trustee
narrow-band-selective receiver
nicholas terrace
oxygenates
parent child relations questionnaire
particle failure test
patricia tree
pattern glass
pattern matching system
PD control
perennially frozen ground
piecewise linear topology
piston cooling device
policosanol
Prairie Village
pre-terms
projected diameter
Pyindaung
pyogenicgranuloma
RAM cram
reaction-type vibration machine
Reeves spiraea
rehi
reinstitutionalizing
SARYRIDAE
Saxifraga pseudoparvula
seamless pressed
shape control
size limit
St George I.
St-Cricq-Chalosse
STgt
supersensitized
Swains I.
synchronous heaving
team-roping
tear sheet
temperatare aesthesiometer
ten-percenter
the BNP
tiit
total yield
totol blindness
toxidrome
transverse-discharge laser
Underground Railway
viola paradon
vouchsafe to do sth
well-formed
wireways
Yeropol
zhiqing