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This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. This will just take a minute. Youve probably chased a fly or two around the house this summer. And, chances are, it took a few swings before you brought down the buzzing nuisance.

发表于:2018-12-02 / 阅读(67) / 评论(0) 分类 Scientific American(八)月

[全屏观看] 点击右键- 另存为 可保存这个Flash影片

发表于:2018-12-12 / 阅读(97) / 评论(0) 分类 北美小学生英语一年级教材(牛津英语教材)

Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol

发表于:2019-01-08 / 阅读(48) / 评论(0) 分类 Scientific American(八)月

Tit for Tat针锋相对An American lady traveling in England some years ago, got into an compartment of a smoking carriage where an Englishman was smoking a pipe. For a short time she sat quietly expecting that the Englishman would stop smoking. But

发表于:2019-01-28 / 阅读(62) / 评论(0) 分类 英语小达人

72 约翰斯·霍普金斯疟疾协会 DATE=7-19-01 TITLE=SCIENCE REPORT - Johns Hopkins Malaria Institute BYLINE=Jill Moss (Start at 01'0

发表于:2019-01-30 / 阅读(67) / 评论(0) 分类 科技之光

Offering Substitute 提供代用品 Specimen Letters1. Offering Rayon in Place of Watered Silk提供人造丝代替水洗丝Dear Sirs,Thank you for your fax of yesterday (April 3) with your order No.456 for 5,000 metres of 100cm wide watered silk. We

发表于:2019-02-05 / 阅读(63) / 评论(0) 分类 实用英语
学英语单词
a matter of congratulation
aberrant ovarium
adenovite
ARCTICOIDEA
avidin-biotin-peroxidase complex method
Besselian date
bituminous pitch
blown your brains out
boarded heel
Boolean position
brachial tumor
Cartier
cathode ray accelerator
chain wheel
collateral sulcus
com-posted
composite data
confrontationist
cotemplate
coupling cock
crowded in
ctenoids
curve of metacenter
custock
cutinized layer
DDC (direct digital control)
decimal location
Disgrazia, Mte.
Echocephalometry
ecological theory
economic factors
ecoscience
electron induced conductivity vidicon
excess-3 code
exploring tube
filter-passing bacteria
flange connector
forecastle starboard
foreshadows
ftl
ganglia submaxillare
general profit rate
gym-goers
handplaced
hunger edema
in days to come
integral governing
kotschubeite
law of navigation
laybourne
Lodobenzene
Maglemosean
microwave sounding unit (msu)
monofrequency radiation
motor cycle
multi-tracer
multivariate poisson distribution
MUNEYUKI
muscular arrector dorsalis
O.T.B.
Official Organ as a Legal Person
paccione
pack cards with
Palmilsulfadiazine
parallel flow turbine
part spore
philatelic psychology
photo-calls
phyllum
plaide
posterior arch
Prince Albert
quenu-Mayo operation
relaminarization
Remanso
replacest
return-jump instruction
ring line
scanic
scanlan
Shults Peninsula
silver-plated copper
spielbergers
stereoscopic acuity
stotin
street lighting code
string tying
supply services
swivel-chair
taenia of taenia
telephone answering
The Emergency
there-on
thrust grading curve
tookes
transformer case
transsellar
Trigonum vesicae
Trypanosoma gambiense
unflashy
vagrance
zinc oxide poisoning