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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Just when you thought youd heard everything, scientists have found that the reason you can hear everythingincluding things that are very quietis because

发表于:2018-12-24 / 阅读(46) / 评论(0) 分类 Scientific American(四)月

The 2009 Nobel Prize in Chemistry goes to Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in England, Yale Universitys Thomas Steitz, and Ada Yonath of the Weizmann Institute of Science in Israel for their studies of the ribosome.

发表于:2019-01-08 / 阅读(67) / 评论(0) 分类 Scientific American(十)月

必备知识4:一些必要的词根(stems) -anthro-,-anthropo- human anthropology -aster-,-astro-,-stellar- star asterisk -audi-,-audit- hear audience -auto- self autograph -bio- life biology -capit- head, chief capital, captain -ced-go, move,yield p

发表于:2019-01-08 / 阅读(128) / 评论(0) 分类 雅思英语

[00:11.60]WARMING UP [00:16.04]How many new uses can you think of for the folowing items? [00:36.49]reminds us of the appearance of nanotechnology, [00:53.76]according to which nothing is useless and [01:04.91]no garbage or waste material to speak of

发表于:2019-01-10 / 阅读(165) / 评论(0) 分类 高中英语人教版高一年级

This years Nobel Prize in Chemistry is about the worlds smallest machines. G?ran Hansson, secretary general of the Royal Swedish Academy of Sciences, earlier this morning. The Royal Swedish Academy of Sciences has decided to award the 2016 Nobel Priz

发表于:2019-01-17 / 阅读(77) / 评论(0) 分类 2016年Scientific American(十)月

Solar power 太阳能 The third way 第三种方法 A new method of making electricity from sunlight has just been tested 一种从太阳光得到能源的新方法正在尝试 AT THE moment, there are two reliable ways to make electricity from sunli

发表于:2019-01-26 / 阅读(77) / 评论(0) 分类 经济学人综合
学英语单词
Afghānestān
aircraft critical speed
angle of horizontal swing
antischolarship
Araria
as chirpy as a cricket
audi(t)o-
babesiosis
bake-in-bag
baline
Barbary
Beaumes
birthcontrol
Bonfils' disease
bradspermatism
brickbat
brush station
cagelike
carrier-reference black level
categorical analysis
ceratoglyphina bambusae
clocher
connected pawn
daana
Debilon
degenerative chorea
demolishment
dhimmi
double magnifier
dowland
dunescape
effective aggregate tax rate
emergency phone
emydocephalus ijimae
entrepreignant
eosinophilic lung
etiologic(al)
euonymus maackii rupr.
externally designated subprogram
FHSA
finished milk
flow angle
flush point
forcest
fuel holddown spring
gallature
general graphic arts
grain trade
group-works
Hei-gawa
impervious sheath cable
implefy
indoor tennis stadium
isordil
Krymgireyevskoye
linkjack
lynset
majority interests
middle-pressure reactor
monitor overlay
multiwire ionization chamber
naval special warfare unit
non-axisymmetrical configuration
ODARS (on-line diagnostic and report system)
olex
operations sequence analysis
Orense
Orseolia oryzae
paleo-calcite
panel caving system
photographic field
political system
protoplasmic stain
radio beacon perpormance monitor
radio-astronomical observatory
regular calomel electrode
retaining washer
reverse weathering
rna-replicases
ruler setting
rumpant
salt crust
Santas foreign body remover
Scutellaria rivularis
sick with worry
social hygiene
social self
suborder lipotyphlas
take somebody's breath away
taking out the trash
ten-feet
tidal current
tightly knit
Tärendö
unovercome
upper-case tool
vertex focal distance
viscosity reduction
wanite
weather beam
wheat screenings
yarn reinforced elastomer