单词：silicon hydride fluoride
单词：silicon hydride fluoride 相关文章
Lesson 10 Silicon valley 硅谷 First listen and then answer the following question. 听录音，然后回答以下问题。 What does the computer industry thrive on apart from anarchy? Technology trends may push Silicon Valley back to the future. Ca
新概念英语第四册
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
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
科技之光
AS IT IS 2015-09-01 Los Angeles' Silicon Beach Becoming Like Silicon Valley America's high technology industry is centered in northern California. The area, known as Silicon Valley, is a short drive from San Francisco Bay. Silicon Valley is home to G
2015年VOA慢速英语(八)月
California's Silicon Beach Is Growing Hub for Tech Start-Ups On the west side of Los Angeles, people from around the world come for the beach, year-round sunshine and warm weather. This also is where Gregg Spiridellis and his brother operate the onli
VOA标准英语2012年(七月)
A citizen uses her cellphone to scan the QR code on a mobike in Beijing. [Photo: China Daily] Issues connected to innovation are being actively discussed by lawmakers at the annual political sessions here in Beijing, with observers suggesting the Chi
2017CRI中国国际广播电台
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
口腔临床英语对话
[00:20.53]史蒂文Jobs（Steven Jobs） [00:34.22]词汇扫描 [00:38.48]Fortune 财富杂志 [00:42.73]Silicon Valley 硅谷 [00:47.35]authorized 授权的 [00:53.83]Much has been made of Jobs' aggressive [00:56.68]and demanding personality. [00:59.05]Fortune noted
各色各样的人
You might think the only place to set up a technology company in the United States is California. After all, Northern California has Silicon Valley, which is home to companies like Apple and Google. One expert on new business agrees Silicon Valley is
2016年VOA慢速英语(十二)月
Some of the most successful technology business owners in Silicon Valley are immigrants. Silicon Valley is an area of northern California that is home to major technology companies like Apple, Google and Facebook. For some immigrants, just living in
2016年VOA慢速英语(十二)月
Russian President Dmitry Medvedev uses a touch screen during a video-link at the Gorki presidential residence outside Moscow, 07 Jun 2010 US Defense Department Backs Quick Ratification of New START Treaty with Russia Russian President Dmitri Medvedev
VOA标准英语2010年(六)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
VOA标准英语2010年(十)月
MARY LOUISE KELLY, HOST: When three former employees filed a class-action lawsuit last week against Google alleging discrimination against women, it opened the latest chapter in what's become a running story featuring accusations of sexism in the tec
2017年NPR美国国家公共电台9月
ROBERT SIEGEL, HOST: In the past two months, many powerful men accused of sexual misconduct from Hollywood to the U.S. Congress have lost their jobs. It wasn't always the case, though, that this type of behavior would be punished. NPR's Laura Sydell
2017年NPR美国国家公共电台12月
STEVE INSKEEP, HOST: Facebook says that starting today it will begin sending a message to roughly 87 million people. These are people whose information may have been shared with Cambridge Analytica - the political data firm - without any consent. Dis
2018年NPR美国国家公共电台4月
LULU GARCIA-NAVARRO, HOST: There is a trade war underway between the U.S. and China, and it is a big concern to the global economy. But there's another deeper rift brewing between Washington and Beijing. And that stems from China's effort to unseat t
2018年NPR美国国家公共电台10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
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
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
英语单词荟萃
It is hard to escape the images of Konza City in Kenya. Advertisements promoting the future high-tech hub, or technopolis, appear daily in the country's newspapers and show regularly on the state television network. The ambitious plan is the work of
英语新闻