声振动;音波

This is Scientific American's 60-second Science. I'm Steve Mirsky. Got a minute? Can you name those notes? Probably not. Perhaps one in ten thousand speakers of European languages has perfect pitch - the ability to recognize a note without having hea

发表于:2018-12-24 / 阅读(56) / 评论(0) 分类 Scientific American(五)月

This is Scientific American's 60-second Science. I'm Karen Hopkin. If you ever got picked on in the schoolyard, you might have wished for some sort of superpower, like unbeatable speed or maybe just the ability to completely disappear. Now scientists

发表于:2018-12-24 / 阅读(54) / 评论(0) 分类 Scientific American(五)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Every year, scores of manatees are killed by boats in Floridas waters. Their plight is an ecological concern. And everyone from marine biologists to Marg

发表于:2019-01-08 / 阅读(47) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute. Hybrid cars are good for the environment, but scientists say that they might be bad for pedestrians. Because hybrids are so quiet that can be hard for wa

发表于:2019-01-08 / 阅读(48) / 评论(0) 分类 Scientific American(五)月

Country Music Ladies Put Men in Their Place American country music lyrics often describe women as they might appear in mens dreams. This is especially true of songs by many male artists. But the songs by Maddie Marlow and Tae Dye are different. The t

发表于:2019-01-12 / 阅读(45) / 评论(0) 分类 2015年VOA慢速英语(九)月

通知与确认 Acknowledgments Confirmations 通知对方接到来信Acknowledging receipt of letters1. Dear Mr/Ms,Thank you for your letter No. A-3 of 6th May, offeringus 6 UI-4 Viewdatas. We have passed it on to ourTechnical Department for their c

发表于:2019-02-06 / 阅读(93) / 评论(0) 分类 实用英语
学英语单词
aceraceaes
affreight
aggregate ray
amber colophony
augmented performance
auricular vein
auto dialler
axeheads
barricadoes
biafora
built-up flask
burbot liver oil
citri-
clear scan
cohortative
crystal mixer radiometer
cummers
curtain twitcher
debt item
developing system
Didang Tang
distaxial
Donopon
draft international standard
dynamically descendent on-unit
eat up sth
endohygrosis
enlarged sieve frame
fatty acid polyethylene glycol ester
first preliminary tremors
fission track dating method
fixed tube sheet exchanger
frame waveform
gate man
glear-eyed
gujrati band hana
Hamarφy
hammering spanner
harmonic average index
hasslin'
high current density cathode
hydrophone calibrator
image effects
ins
instrument for quality analysis of water
internationally
ischiofemoral ligaments
Juglandiphyllum
Khonburi
Kieselaluminite
kirklands
lead-angle steering command
Leonora
menzy
Methopt
mixed-method
mongoos
Mont Belvieu
multiple markets
neutron spectrum of reactor
normal anomaly
off-duty runway
Osteodysgenesis
Perugorria
poes-poes
print speed printing speed
promotional freight rates
propagating front
Protoisotricha
radiative-turbulent equilibrium
ramanaiah
ratio gear
reseeing
resource leveling method
revittle
rise-time error
rotary mill
satellite orbital altitude
SBR of emulsion polymerization
serial punch
signal shaping network
slag handling system
square mitre
state constitution
static moment
stretch their legs
stylo-mastoid foramen
subdispatch
submaxillary nerve
subversive activities
T and E
theophylacts
to attend to...
unprescient
unruliness
urethra-lithotomy
vaguss
vipereous
washing-down
Widener University
yellowed
zawadski