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
absorption-type refrigerating appliance
accuracy comparison
alar odontoid ligament
alveolate
analog output channel amplifier
annual felling
bettinelli
biscuit factory
blinked
bradoon
brune
buzz saw
candy flips
cell mutation
centripetal expansion turbine
chart of business
chemical decay
colostrum bodies
concerted cycloaddition
crude desalting
cuckoo-flower
cyclical stress
data duplication
deodorises
dimethylaminoethanol
dog-like
early pl/i
extra-high-tensile steel
fall on one's both feet
family testudinidaes
forces
freitas
frequencymeter
fyzs
General Medical Collection of Royal Benevolence
golland
hagiomania
helimagnetism
heptene dicarboxylic acid
host-cell
incidentness
insulated winding
intermediate-size car
Japanese furniture
knowledg
Kyondo
Lefkada
levandowski
lgrimas
light colour
live beyond
lubreel
main switching compound
male-and-female face
mandylors
mechanical simulation test
metering management
micro-dosimetry
mobile machinery
nerve to lateral pterygoid
nmeros
NSCS
octahydroanthraquinone
on the breadline
Palouse Falls
pentatrichomoniasis
performas
pocket feeder
prostigmins
provirus
Raelianism
raw capacity
repurchased stock
Roegneria calcicola
round dome
rubbishes
safety inspection
samosas
scutellar angle
shaped pulse
sleigh-rider
songorine
sound recording on film
spindle lift
star quad
steyaert
summ'd
swingel
synonym problem
tartaroyl
the serpent
thioglycerol
tipping-bucket rain ga(u)ge
togalike
top ... off
toxicity characteristic leaching apparatus
under-saturation
unioning
unpruned
Vuzenica
weather forecastings
your bitch