单词：fluoride waste
单词：fluoride waste 相关文章
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
Technology Report - Could Waste Plastic Reduce Our Need for Oil? 科技报道 - 塑料制油技术是否可以减少美国的石油需求 From VOA Learning English, this is the Technology Report in Special English. 这里是美国之音慢速英语科技
2012年VOA慢速英语(十一)月
Chinese netizens have launched an online campaign against wasting food and called on people to take their leftovers home after banquets as well as other measures to curb such waste. Dubbed eating up your dishes, the move not only echoes the central g
英闻天下
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
Technology Report - Turning Industrial Waste-Heat Into Electricity 科技报道 - 利用工业废热发电 This is the VOA Special English Technology Report. 这里是美国之音慢速英语科技报道。 Scientists say enough energy is being waste
2012年VOA慢速英语(八)月
Technology Report - Turning Industrial Waste-Heat Into Electricity This is the VOA Special English Technology Report. Scientists say enough energy is being wasted in the oil and gas fields of Texas every year to provide electricity to one hundred tho
2012年VOA慢速英语(九)月
Waste Not, Want Not Next week (8/26-31) is World Water Week, and this years theme is Water and Food Security. Some 25 hundred officials, policymakers and scientists will gather in Stockholm for the largest annual meeting on water development issues.
VOA标准英语2012年(八月)
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
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
SCIENCE IN THE NEWS - When Nothing Goes to Waste: the Mystery of Obsessive Hoarding By Lawan Davis Broadcast: Tuesday, May 03, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special Engli
科技之光
By Cathy Majtenyi Kenya 07 November 2009 The scourge of so-called flying toilets - where human waste is put into a plastic bag and tossed into the air, landing on roads or in gutters - has plagued the slums of Kenya's capital Nairobi for decades. Bu
VOA标准英语2009年(十一月)
摇滚:Allison Iraheta - Don't Waste the Pretty 相关介绍：首单Friday Ill Be Over U足以让人震撼于今年美偶新锐女将的风采.JIVE唱片公司的CEO兼主席Barry Weiss在接受采访时说:她强有力的嗓音,积极进取的态度
英文摇滚歌曲
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
3 surefire ways to waste gas I have been reading an awful lot of stories regarding two wheeled motorcycles or scooters as a better way to deal with the high gas prices. I total disagree after all its only money right? Here are 3 simples steps that yo
阅读空间
Lesson 178 It's a waste of time. 1.It's waste of time.这是在浪费时间。 2.Don't let it waste.别让它的白白浪费掉。 3.Don't waste your money!别破费了！ 4.Don't waste your time!别浪费你的时间了！ 5.All my efforts were wast
辛沛沛NO-BOOK 辛沛沛傻瓜机口语极短句
China works for safe dangerous waste disposal BEIJING, Nov. 1 (Xinhua) -- The Chinese government has released a guideline to ensure all dangerous wastes produced by major licensed units at or above city levels will be safely disposed of by 2015. Our
英语新闻
A French train carrying 11 containers of reprocessed nuclear waste entered Germany Friday on its way to a storage site. French authorities had stopped the train Thursday before it reached the German border, in hopes of avoiding protests over the radi
英语新闻
Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand no matter where in the world they live. Voice 1 Usha Chaumar was born to a poor famil
环球英语 Spotlight