(杀菌药)灭菌硅

Good morning Mrs. Hall. If none of your teeth are bothering you, I'll restore the tooth with the largest cavity. 霍尔太太,早安。 假如你的牙齿不让你难受的话, 那么我就把蛀的最厉害的牙补一补。 This is the tooth th

发表于:2018-12-03 / 阅读(97) / 评论(0) 分类 口腔临床英语对话

The Mercury Mess By Samantha Levine / 2004, as first appeared in U.S. News nbsp; What are the dangers of mercury in fish? Can the mercury mess be cleaned up? 1 Are these fish safe to eat?” It’s a

发表于:2018-12-19 / 阅读(79) / 评论(0) 分类 彭蒙惠英语

When Pyrex(公司名) cookware first came out, it was advertised as the ice box to oven, because itwas made of borosilicate glass which could weather large temperature changes without undergoing thermo-shock and shattering. But today, Americans Pyrex

发表于:2018-12-24 / 阅读(55) / 评论(0) 分类 Scientific American(九)月

This is scientific American sixty seconds science. I'm Christopher Intagliata. Got a minute? When Pyrex cookware first came out, it was advertised as icebox to oven. Because it was made of borosilicate glass which could weather large temperature chan

发表于:2018-12-24 / 阅读(52) / 评论(0) 分类 Scientific American(九)月

86 去痛片须慎用 DATE=8-16-01 TITLE=SCIENCE REPORT - OxyContin Warning BYLINE=Jerilyn Watson (Start at 1'02

发表于:2019-01-02 / 阅读(114) / 评论(0) 分类 科技之光

A few months ago the fairy tale came true. 几个月前,童话故事成真了! We announced to the world that we know what these streaks are. It's liquid water. 我们向世界宣布,我们已经知道这些条纹是什么了。是液态水。

发表于:2019-01-18 / 阅读(76) / 评论(0) 分类 TED演讲科学篇

Cassini just a few months ago also flew through the plume, and it measured silicate particles. 卡西尼太空船几个月前又从这些飞溅的水流中穿过,它检测到了硅酸盐颗粒。 Where does the silica come from? 这些硅从哪来的

发表于:2019-01-18 / 阅读(86) / 评论(0) 分类 TED演讲科学篇

Science and Technology Plastics There and back again 科技 塑料 旧法新用 An old idea may help solve the problem of plastic waste 一个老方法也许可以帮助解决塑料垃圾的问题 PLASTICS were once regarded as wonder-materials. They

发表于:2019-01-26 / 阅读(79) / 评论(0) 分类 经济学人科技系列

Beginners. Well, it's time for a new dog. For the past year, we have been a one dog family. But, you know, our dog, Rosie, is a wildly social lady. She goes crazy any time she meets another dog, a cat, a mouse, or a bird, let alone a human. But, the

发表于:2019-01-28 / 阅读(82) / 评论(0) 分类 英语博客 A cup of English

SCIENCE IN THE NEWS - Mercury in Fish / Life on Land / The Goldman Environmental Prize By Broadcast: Tuesday, May 11, 2004 (THEME) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm B

发表于:2019-01-30 / 阅读(221) / 评论(0) 分类 科技之光

Raw anti-drug campaign awakens state Ted Landphair | Missoula, Montana 04 February 2010 Photo: Montana Meth Project Adults across Montana were frightened by what they were seeing. Some hardly recognized their meth-addled teenagers. Related Links Mont

发表于:2019-02-02 / 阅读(85) / 评论(0) 分类 VOA标准英语2010年(二月)

manganese n. 锰(元素符号为Mn) mantle composition 覆盖物的成分 Mercury n. 水星 molten v. 溶化;adj. 熔铸的 monitor n. 监视器,监控 mudflow n.[地] 泥流 Neptune n. [天]海王

发表于:2019-02-02 / 阅读(136) / 评论(0) 分类 英文语法词汇

By Paul Sisco Washington, DC 15 February 2008 Scientists have started analyzing data and images acquired when the Messenger space probe passed within 200 kilometers of the planet Mercury last month. It was the first flyby of the solar system's inner-

发表于:2019-02-06 / 阅读(129) / 评论(0) 分类 VOA常速英语2008年(二月)

Beginners. Today, Foxy had an appointment with the vet for vaccinations and a general check-up. She is about eight months old, so she needed her second set of vaccinations. The vet also needed to see if her growth was normal and healthy. I put her in

发表于:2019-02-07 / 阅读(107) / 评论(0) 分类 英语博客 A cup of English

BEIJING, Nov. 7 (Xinhuanet) -- A huge asteroid will pass closer to Earth than the moon on Tuesday, but experts say there is no cause for alarm. Asteroid 2005 YU 55 will pass about 300-thousand kilometers from the earth. The giant space rock is about

发表于:2019-02-08 / 阅读(81) / 评论(0) 分类 英语新闻

The U.S. space agency NASA's Mars probe Phoenix has detected icy snow falling through the Martian atmosphere. The spacecraft has also discovered material in the planet's soil that is leading scientists a step closer in their conclusion that life pro

发表于:2019-02-08 / 阅读(62) / 评论(0) 分类 VOA标准英语2008年(十月)

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

发表于:2019-02-17 / 阅读(98) / 评论(0) 分类 万物简史

Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions

发表于:2019-02-17 / 阅读(92) / 评论(0) 分类 万物简史

If you were going to a restaurant and wanted a healthier option, 如果你去饭店,你想吃得健康一点, which would you choose, grilled or fried chicken? 你会选择哪种食品呢,烤鸡还是炸鸡? Now most people would answer grill

发表于:2019-02-21 / 阅读(111) / 评论(0) 分类 TED演讲教育篇

Voice 1 Hello. Im Ruby Jones. Voice 2 And Im Marina Santee. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. A small candle burns. It re

发表于:2019-02-21 / 阅读(89) / 评论(0) 分类 环球英语 Spotlight
学英语单词
a trial lawyer
acoustoelectric index
AND-connection
Baedeker's
be in a good
behaviourists
Bellaneed
binary-to-octal conversion
brun's spheroid
buggish
Bérive
cagas
Carvoeiro
centripetal model
christakis
Cichorium
coastliners
communication key
computer operation code
constitutive promoter element
corticotropins
diaphus knappi
digital gradient
dispersion structure
dodecaploidy
economicos
ellipsoidal variable
exhibit A
fasciana
fila lateralia pontis
final cutting
frequent-flier
haematogenous pigment
hakkios
half.com
heartlet
high loading rate
hot wire coil
hygienic feature
innerve
intricenyne
junction of two streams
Katonium
laurel (leaves) oil
lie at sb.'s door
ligandless
liquid oxygen gasifier
low-hydrogen type
magdalenes
maguari stork
medical knowledge
membrane tank
methral
microsclerotia
microwave synthesizer
modus operandus
Montepuez, R.
Muller-Ribbing-Clement
multiple order
naphthalenedicarboxylic acid
niggerlings
o'nan
open half space
organotins
Otala
overfining
overinclusion
performance index meter
Pilea glaberrima
porridge oats
positionally weighted binary
post test
private pilot certificate
public distribution system
purified rubber
Renya
rigid busbar
rummily
seafood forks
self-devised
spinal hereditary ataxia
spinsterlike
split someone's the ears of someone
spring-loadeds
stereo-amplifier
subwardens
sulphone
sunk-key
swine paratyphoid
tenleytown
tent bed
throttle bushing
tinea barbae
tower-footing resistance
tresnoble
triplatin tetranitrate
tutoyers
ultraphonics
under coat glaze
vagen
vectorship
Yuchka