牙本质碎屑

Ouch! About a quarter of all school-age kids will break or otherwise damage a tooth. Adults have their share of cracked chompers too. But what if fixing a busted bicuspid was as easy as zapping it with a laser? Preliminary work with young rats has mo

发表于:2019-01-02 / 阅读(153) / 评论(0) 分类 英伦广角

By June Soh and Rosanne Skirble New Orleans 26 April 2006 watch Post Katrina Health report Mold is still present on this kitchen door in a New Orleans home When Hurricane Katrina struck the Gulf Coast

发表于:2019-01-04 / 阅读(209) / 评论(0) 分类 2006年VOA标准英语(四月)

Japanese authorities are considering releasing slightly radioactive vapor to ease pressure at a nuclear reactor in Fukushima. Lucy Craft from Tokyo reports the safety of Japan's power plants are major concern in the aftermath of the 8.9-magnitude ear

发表于:2019-01-08 / 阅读(362) / 评论(0) 分类 2011年NPR美国国家公共电台3月

By Chad Bouchard Yogyakarta 06 June 2006 The first wave of relief to earthquake areas in Central Java has focused on food and medicine. Now a second wave of volunteers is tending to a need they say is

发表于:2019-01-11 / 阅读(279) / 评论(0) 分类 2006年VOA标准英语(六月)

Brazilian aircraft searching for an Air France jet that disappeared with 228 people onboard in an Atlantic storm have spotted debris in the ocean. Members of Brazilian Pelican military squad prepare to depart from Campo Grande, Mato Grosso do Sul, t

发表于:2019-01-11 / 阅读(151) / 评论(0) 分类 VOA标准英语2009年(六月)

1. Authorities say an Ethiopian Airlines jet was in flames before it plunged into the Mediterranean Sea minutes after takeoff. It had 90 people on board when it left Beirut Airport Monday. The cause of the crash is not known, although terrorism is no

发表于:2019-01-11 / 阅读(193) / 评论(0) 分类 美联社新闻一分钟2010(二月)

NYC9/11RescuersExperienceLingeringHealthProblems Nearly 3,000 people died in the terrorist attack on the World Trade Center in New York on September 11, 2001. But the twin towers' collapse and their smoldering ruins also exposed thousands of rescuers

发表于:2019-01-13 / 阅读(127) / 评论(0) 分类 VOA标准英语2011年(九月)

Bacteria Thrive on Ocean Plastic Debris It takes about six weeks for a plastic bag or bottle to ride the surface currents from the U.S. East Coast to the Sargasso Sea, in the center of the North Atlantic. The area is a gyre, essentially a big whirlpo

发表于:2019-01-14 / 阅读(132) / 评论(0) 分类 VOA标准英语2013年(七月)

Every year satellites are damaged or destroyed by objects orbiting the Earth's atmosphere. An Australian company is now using the latest laser technology to track these objects in order to reduce cosmic damage. Li Dong has the details. Even in space,

发表于:2019-01-19 / 阅读(163) / 评论(0) 分类 世界各地新闻集锦

By Anita Elash Paris 19 May 2007 The latest movie by the controversial U.S. filmmaker Michael Moore has opened at the Cannes Film Festival in France. Moore is known for his harsh criticism of American culture. This time, he is taking on the U.S. heal

发表于:2019-02-05 / 阅读(135) / 评论(0) 分类 2007年VOA标准英语(五月)

By Nico Colombant Dakar 06 March 2008 Government troops were able to fight back a second rebel advance on Chad's capital recently, but as VOA's Nico Colombant and Tatiana Mossot report, residents of N'Djamena are finding life is not the same anymore.

发表于:2019-02-06 / 阅读(125) / 评论(0) 分类 VOA标准英语2008年(三月)

今天我们要学的词是debris。 Debris, 意思是残骸。 Pieces of debris from last year's Japanese tsunami, carried by the currents, have begun to show up on the west coast of the United States and Canada, 去年日本海啸留下的残骸在洋

发表于:2019-02-08 / 阅读(116) / 评论(0) 分类 英语单词荟萃

本期内容: It'sahauntingreminderoftheexactmomentanearthquakereducedthehistorictownofAmatricetorubble. 一场地震将中世纪古镇Amatrice(阿马特里切)几乎夷为平地,那一刻成为了人们心中挥之不去的梦魇。 Asinglec

发表于:2019-02-14 / 阅读(105) / 评论(0) 分类 口语侠每日早读

Getting Rid Of Cavities Don: Sorry, I'm late. I was brushing my teeth. Yal: Brushing your teeth! Right before A Moment of Science? Why? D: I'm trying to get rid of a cavity . Y: Get rid of a cavity ? Are you stuck with a cavity once you have it? D: I

发表于:2019-02-16 / 阅读(112) / 评论(0) 分类 英语听力文摘 English Digest

Debris from the Rena has reached beaches in the Coromandel. There are bags of milk powder, plastic and rope on the beaches and broken containers. The sea around the Rena is white from broken bags of milk powder. There is also oil for about 3km around

发表于:2019-02-17 / 阅读(146) / 评论(0) 分类 新西兰英语

CAIRO, Jan. 4 (Xinhua) -- The Egyptian police has found debris of the suspect of a church blast in New Year's Eve, Egyptian local media reported Tuesday. Criminal lab experts have collected the debris of a person whom they accused to be the perpetrat

发表于:2019-02-18 / 阅读(130) / 评论(0) 分类 英语新闻

BEIJING, March 13 (Xinhua) -- A Beijing Ducks official has defended Stephon Marbury amid allegations that the former NBA star had hit a fan after the team's narrow loss in Sunday's Chinese Basketball Association (CBA) league game. None of my players

发表于:2019-02-19 / 阅读(153) / 评论(0) 分类 英语新闻

Getting Rid Of Cavities 牙痛是继续忍受还是提前做好防护?爱护牙齿,每天的必修课。 M:Sorry,I'm late.I was brushing my teeth. W:Brushing your teeth?Right before 'A Moment Of Science'? Why? M:I'm trying to get rid of a cavity. W

发表于:2019-02-24 / 阅读(152) / 评论(0) 分类 英语听力文摘 English Digest

DNA Helps Catch Poachers 科学家们利用一种革命性的基因技术成功确定了走私犯屠宰大象的非洲地区,这些大象沦为全世界非法象牙贸易的受害者。利用非洲大象的DNA图谱,他们已发现最近缉获的象

发表于:2019-02-24 / 阅读(150) / 评论(0) 分类 英语听力文摘 English Digest

Enamel is the hard outer tooth layer. 牙釉质是牙齿坚硬的外层。 The cavity gets larger by entering the softer second tooth layer, the dentin. 蛀牙洞到了牙齿的较软的第二层, 也就是牙本质时,龋洞就会变得大的多。

发表于:2019-02-27 / 阅读(206) / 评论(0) 分类 口腔临床英语对话
学英语单词
Abelian domain
aphelias
Athenas
Atterberg test
ballast coil
Berandang, Sungai
bouncy castle
bus control chip
calf pen
call loan rate
cartwhippings
cascade performance
Cauloside
Chechin
chiloscyllium griseum
coccinella
cold blooded
conceptual change
correct a deviation
creep someone out
crocodylid
cross stitched belt
Cryptogamia
de-epithelized skin flap
done brown
dreelite
earth imaging
egg-breaking machine
electrical-type detector
elrko
environment effect on gene expression
Fat Nigrosine B
fin type radiator
first-class product
fumarle
gresh
harbour installation
Hetepheres
hoonah
horse-shoe clamp
Hubble parameter
hydrauger
hyperbolic metric geometry in a plane
induction loss
infra ray width gauge
Ismaily
kinotannic acid
laver wafer drying machine
ligamenta mallei superius
lindon
Macuspana
magnetic blow-out spark gap
medical officer
mercurial nephrosis
mercuroxyl
methyl red (mr)
missing links
mobile container crane
multiple file clause
nonanswering
oiled silk
Opposite Person for Administration
optimize
ozouf
partier
payings-in
picowave
plated weight
platinum-level
pre-operational stage
prophaneness
quantitative quality of COD
randomisings
real feature
resistance to sudden heating
resource hierarchy
rimrocks
S type turbine
Sangowo
Santa Clarita
semestral
semi-monocoque construction
shed for passengers
sialolithiasis
slabbing mill
stampede into
stereotemplet triagulation
Stock rating
streamline chart
suillus americanus
swagelok
Sīdi Abd el Rahman
tai kok tsui
thermal elongation and contraction
thioguanidin
thralldom
turny
ulisse
under someone's very eyes
visible light detector
weighting method
windward truss