氟化物腐蚀剂

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Beauty is only skin deep. And the beauty of shiny white teeth is even less deep. Because a new study shows that fluoride forms a thinner protective shiel

发表于:2018-12-02 / 阅读(180) / 评论(0) 分类 Scientific American(十二)月

07 牙病的预防与治疗 DATE=2-27-01 TITLE=SCIENCE IN THE NEWS #2113 - (1)Dental Health BYLINE=Nancy Steinbach VOICE ONE: This is Sarah Long. VOICE TWO: And this is Bob Doughty with Science in the

发表于:2018-12-07 / 阅读(139) / 评论(0) 分类 科技之光

赖世雄旅游观光英语通教你学会观光旅游的各种对话、句子。 An Art Purchase 购买艺术品 Kathy and Evan visit a local art gallery near Kings New Square. 凯西和艾凡参观了国王新广场附近的一家当地美术馆。

发表于:2018-12-09 / 阅读(323) / 评论(0) 分类 赖世雄旅游观光英语通

Is it necessary to have cavities in the baby teeth repaired? 乳牙蛀成了洞还有必要补上吗? If the baby teeth are going to fall out, I don't think that it matters if they become decayed. 如果乳牙是要脱落的,我想蛀了也没有关

发表于:2018-12-27 / 阅读(171) / 评论(0) 分类 口腔临床英语对话

A cluster of villages in China's Guizhou province has been plagued by an outbreak of disease that damages teeth and bones. Now, a new study by Chinese and American researchers puts the blame on polluted coal burned in home fireplaces. In small quanti

发表于:2019-01-14 / 阅读(155) / 评论(0) 分类 VOA标准英语2010年(十)月

Ah yes.The ol' fluoride rinse at the dentist. Not pleasant. But hey, good for your teeth, right? 没错,这是牙医洗牙用的含氟漱口水。确实够闹心的。但毕竟对你的牙齿有益不是吗? Well now materials scientists have been

发表于:2019-01-20 / 阅读(144) / 评论(0) 分类 2018年科学美国人1月

I HAVE seen a great many houses in my time, little and big, new and old, built of stone and of wood, but of one house I have kept a very vivid memory. It was, properly speaking, rather a cottage than a house a tiny cottage of one story, with three wi

发表于:2019-01-23 / 阅读(158) / 评论(0) 分类 英文短篇小说

SCIENCE IN THE NEWS - November 26, 2002: Dental Health By Nancy Steinbach VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program abo

发表于:2019-01-30 / 阅读(146) / 评论(0) 分类 科技之光

今天我们要学的词是 fluoride. Fluoride 氟化物。The U.S. government is lowering the recommended amount of fluoride added to drinking water for the first time in more than 50 years. 美国政府50多年来首次降低饮用水建议添加的氟

发表于:2019-02-02 / 阅读(141) / 评论(0) 分类 英语单词荟萃

Drink-drivers and repeat traffic offenders in Thailand could be sent to work in hospital morgues under a new plan by the authorities to try to put a stop to carnage on the countrys roads. 为减少致命交通事故,泰国政府出台新计划,拟派

发表于:2019-02-13 / 阅读(144) / 评论(0) 分类 阅读空间
学英语单词
a.f.l.-c.i.o
air hose burst
air-filled waveguide
algebraic number system
average stress
badua
Barra de São Rosa
benzothiazocine
blepharal herpes simplex
block gage (gage block) (slip gage)
Boû Dîb
bubbling fluidization
Buchholz relay
by gift
canal of cochlea
capillar-
casticin
cellulose column
compensatory official financing
complementation patterns
concoctor
congenital stenosis of meatus urinarius
convenience-food
Deinotheriidae
descensus uteris
dip stool
disproportionalities
doctrine
document statistics
doe parties
durenat
ebonite knot
effective disc area
emmae
feorm-fultum
feretories
fixed length record
fixed sets
forbidden state
fucks
full-advance method
Galaone
gaseous insulation
gear bronze
gimbal system
gloeckner
Greiner chronocomparator
Gullev
hand combination set
have title to do sth
hydrogen powered vehicle
inquiry and communications system
ionization foaming
lapward
lensless component
looseknit
madenburg
mastigonemes
mercury controller
military chemistry
moss opal
Mézenc, Mt.
Nagele
natural solid insulator
Nercillac
netherhairs
niinde
nonfatal
occupational noise exposure
persorption
pipradrol
polar oblateness
port-access coronary bypass surgery
production center method
production committee
propeller shank
pseudeurina maculata
put the key under the door
radical economics
resands
risee
Ross, Pt.
Saybolt thermoviscosimeter
short-cut multiplication
shoulder one's way
Sigmagraptus
sloganizing
socialista
solar radiation matching
surloins
synth pad
tangible assets turnover
tartuffeism
telecommunication line
theis
time-travel
tornstam
toxinoses
tracing stylus
underfished
variation from budgeted cost
wing-collars