【无机化学】氟化亚铬

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(363) / 评论(0) 分类 Scientific American(十二)月

北京奥运28大项 参与,竞争,分享,进步 Synchronized Swimming 花样游泳 英文原文 The events of Synchronized Swimming are Solos, Duets, Teams and Free Combination. Competitors in Synchronized Swimming younger than fifteen (15) years of age (on December

发表于:2018-12-05 / 阅读(384) / 评论(0) 分类 奥运28大项比赛

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(327) / 评论(0) 分类 科技之光

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(345) / 评论(0) 分类 口腔临床英语对话

北京奥运28大项 参与,竞争,分享,进步 Synchronized Swimming 花样游泳 MUSIC ACCOMPANIMENTS 音乐伴奏 英文原文 The Sound Centre Manager shall be responsible for the securing and properly presenting the accompaniment for each routine. For FINA competiti

发表于:2018-12-30 / 阅读(311) / 评论(0) 分类 奥运28大项比赛

Grammar Girl here. Today's topic is words that can get you into trouble. Guest-writer Bonnie Trenga writes: Once upon a time, some mistaken citizens stood up for American principals, p-r-i-n-c-i-p-a-l-s. Across the Atlantic, a nutty queen sat on her

发表于:2019-01-02 / 阅读(447) / 评论(0) 分类 英语语法 Grammar Girl

Every year around Christmas, Stockbridge, a small town in western Massachusetts, puts on a display unlike any other in the US. The celebrated American artist Norman Rockwell, who passed away some 30 years ago, used the New England town as the setting

发表于:2019-01-13 / 阅读(317) / 评论(0) 分类 VOA标准英语2009年(十二月)

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(334) / 评论(0) 分类 VOA标准英语2010年(十)月

Ethiopia will accomplish the construction at any cost whether donors continue funds or not. The giant Gibe III dam, now being built on the Omo River in southwestern Ethiopia is a boon for some, a problem for others. Supporters say it will provide ele

发表于:2019-01-14 / 阅读(366) / 评论(0) 分类 VOA标准英语2010年(九)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(333) / 评论(0) 分类 2018年科学美国人1月

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(306) / 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(261) / 评论(0) 分类 英语单词荟萃
学英语单词
-sy
adenosine triphosphate sulfurylase
after-treatment with tonnin
allonging
amercements
arginine glutamate
auger drilling
blepharophyllum
bus-tickets
canary creeper
Carnieres
channel demodulator
chief legislator
chopper transistor
circular casing pump
colica aeruginis
consistentwith
correntropy
Councilman-Mallory's culture-medium
crapette
culpose
curvature-area method
daddy's
dehai
docosenoates
Dracula sneeze
electromagnetic wave distance measuring
ennead
exclusion under direct vision
farrukh
fat embolus
Feuerbach
filtered electron image
Fire Phone
greedy cycle
gripping pattern
i-ccl
Jewish holy day
jmb
Kerr metric
kuchen
lay a mine
lerema
linear interpolation
loop diallings
Luengue
malealdehyde
motion squirm
Mouti
Najas foveolata
nonwaterproofed
oil extraction
onset buffet
osmoreceptors
parent-figure
parental notification law
phegopteris decursive-pinnata
Phlomis jeholensis
phytophygous community
pingpong paddles
Plantago lessingii
primordial cells
process innovation
pseudomalletia taliensis
Pulsano
pump light
pyrocitrate
quick acting switching over
record on spot
reoptimizing
resource distribution
resting stage of infection
retarder-equipped
Royal Swedish Academy of Sciences
salmeterol
samogenin
Sangkhla Buri
sanitation
SARTF
silver-store
slitting milling cutter
spirit duck
stable breeding
stenopsyche drakon
Stirling Moss
Tacaimbó
taining
the letter
the scales
thermally excited electron
three-parts
top-down system
transport of drug
tumo(u)r surgery
uredo inflexa
VGA (very general algorithm)
visits with
weighted graphic rating scale
Yakushi Nyorai
yarn-dyeds
your guys's
Yǒmjon