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Ever feel like you are working in a pressure cooker ? Scientists find this week that job stress and strain can indeed make your heart work overtime. A medical survey of 8, 000 white-collar workers fin

发表于:2018-12-11 / 阅读(38) / 评论(0) 分类 万花筒2006年

This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. One of the problems with large-scale solar power plants is that they require a huge amount of space. To rise above that problem Israeli researchers rece

发表于:2018-12-24 / 阅读(54) / 评论(0) 分类 Scientific American(三)月

By David McAlary Washington 14 September 2006 The International Space Station has spread a new pair of golden wings. They are solar panels that will double the amount of power available to the outpost. Unfurling them took longer than expected becaus

发表于:2019-01-07 / 阅读(107) / 评论(0) 分类 2006年VOA标准英语(九月)

Early warning systems can be the difference between life and death in earthquake-prone regions. But they are expensive. The US, Mexico and Japan have such systems. That leaves large swats of central and South America, Asia and the Caribbean unprotect

发表于:2019-01-20 / 阅读(35) / 评论(0) 分类 2015年Scientific American(四)月
学英语单词
adenomatous carcinoma
advance balance line
all-weather
allantiasis
aluminium-covered steel wire
amolish
ancorinid
antiballistic missiles
applicative
artificial jewel
audio-modulated radiosonde
back to the wall
battle with
be dolled up to kill
blastodermic layer
bright nebule
bucket-brigade delay line
bulb wall loading
butadiene latex
C-curarine-2
cleidoic
co-ordinat
cooled sink
dark earth
destituteness
double super royal
drip line
euthanasia
exoantigens
Ficus hispida
French people
general heir
green yarn
harbo(u)r authority
healthy individuals
heavy scaling
heavy-hearted
Howmore
hydrogen brittleness of copper
infra red physics
intermediate frequency attenuator
intuitive estimate
ionometer
irrestrainable
jccus
lead flashing
lip-synchronism
lowse
minimum loss
mixing period
moldanov
motion valve
myelosyphilosis
national data collection system
neocatastrophists
Nesting-box
nourishingly
number crunching
obturator ring
oophoro-
OTPROM
ottavios
packshots
paged out
paging-in
periglossitis
permanent virtual path connection
pintrich
potyvirus hippeastrum mosaic virus
punk rocker
purchasing departments
radiation energy thermometer
re-constituted
reserve for accidents
Salsola monoptera
sampling network
schleich
scope management
secaire
sideband telephony
sintabolin
Stellaria strongylosepala
stick your nose into something
subroutine librarian
tamarixetin
thanatography
the tax to be paid each month
thermal charge
thermo couple
thermoelectric type
top cylinder
traditional-styles
translesion
ultrared ray
umbrana
underground rail road station
unit performance
valve head deposits
weathering layer
wireless officer
Yabus Khawr (Yabus)
year-end reward