[化] 甲基丙烯醛

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a

发表于:2018-12-24 / 阅读(63) / 评论(0) 分类 Scientific American(六)月

Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to the research presented at the American Chemical Society meeting

发表于:2018-12-24 / 阅读(66) / 评论(0) 分类 Scientific American(三)月

Ann Landers Gave Advice to Newspaper Readers Across AmericaWritten by Caty Weaver (THEME) VOICE ONE: Im Mary Tillotson. VOICE TWO: And Im Steve Ember with the VOA Special English program PEOPLE IN AMERICA. Today, we tell about advice writer Ann Lande

发表于:2019-01-02 / 阅读(64) / 评论(0) 分类 名人轶事

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(87) / 评论(0) 分类 农业与发展

THIS IS AMERICA - Fathers Who Cook; Food Trucks Roll Across America FRITZI BODENHEIMER: Welcome to THIS IS AMERICA in VOA Special English. Im Fritzi Bodenheimer. MARIO RITTER: And Im Mario Ritter. This week on our program, we hear about fathers who c

发表于:2019-01-12 / 阅读(85) / 评论(0) 分类 2011年VOA慢速英语(八)月

Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长

发表于:2019-01-26 / 阅读(58) / 评论(0) 分类 经济学人科技系列
学英语单词
1-hydroxysulfurmycin
accommodating financial transaction
actual air
airfoil vane
Alciphron
alpha-keratin
Aquariid
arguments from sign
bangle ears
banos de la encina
be drugged by
brachycephalies
cacaphthae
Calinog
cupset
Dadapan
deficiency-heat
destination address field prime
dial
dial-like
dies infaustus
drop-heart
dynamic frequency scaling
ear selection
electronic gear
elementary optics
emandibulate
energized for holding
energy consumption rate
enhypostatic
erratic behavior
error correction
esophageal forceps
extra-europeans
extratympanic
fill
forge-test
friction pressure control
fusion sawing
Gmelina delavayana
hiding
Hkasin
Idulian
IMIA-LAC
impossible dream
in ... nature
industrial-chic
input/output parity interrupt
johnsy
knowledge-based diagnosis
large particles
lithia ceramics
lucus
maneuvering air conpressor
measleslike
model of preservation
moisron
monetary incentives
Mumoni
nethamine
neuriatry
not tolerated by law
optimum step aize in one-bit quantization
oversize commodity car
pampe
parastat
particle size of dust
patching rubber
pelleting press
playblasts
plurilateral
ply rolling
poss LQ
propagation angle
re-engining
red-wings
registration requirement
resynchronized
RHIZOSTOMAE
ribothymidylate
river straightening
root celeriac
sahney
series production
settings
short i
steaming process
steroidogenicer
strue
surge margin
tail
tank saddle
theory of a synthesized economic base
tofteland
total oxidant
Two or three of them look familiar
unpleasant person
vector-scan
Wallsman
Werackebach's sign
xanthic ferralsols
Yel'tsovka