激光粉

VOA常速英语2008年-US Government Reviews Laser Eye Surgery

By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca

发表于:2018-12-08 / 阅读(168) / 评论(0)

VOA常速英语2008年（四月）

VOA慢速英语2013 EXPLORATIONS - The History of the Laser

EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can

发表于:2018-12-16 / 阅读(162) / 评论(0)

2013年VOA慢速英语(二)月

VOA常速英语2014--New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力

New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl

发表于:2018-12-16 / 阅读(149) / 评论(0)

VOA标准英语2014年(二月)

Fonterra Apologizes for Tainted Milk Powder Scare

New Zealand dairy firm Fonterra has apologized for its tainted milk powder scandal. Batches of the whey protein from the dairy giant were allegedly found containing toxic bacteria. Su Yi has more. Fonterra CEO Theo Spierings says Fonterra regrets any

发表于:2018-12-19 / 阅读(152) / 评论(0)

世界各地新闻集锦

Watch the US Navy’s New Laser Weapon in Action

The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network

发表于:2019-01-02 / 阅读(175) / 评论(0)

2017年VOA慢速英语(七)月

2005年NPR美国国家公共电台九月-Laser Work Earns Trio Nobel Prize for Phy

This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke

发表于:2019-01-08 / 阅读(246) / 评论(0)

2005年NPR美国国家公共电台

VOA标准英语2013--The History of the Laser

The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci

发表于:2019-01-12 / 阅读(228) / 评论(0)

2013年VOA慢速英语(五)月

VOA慢速英语2012--The Laser: Futuristic Science Found at Your Local Store

EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one

发表于:2019-01-12 / 阅读(195) / 评论(0)

2012年VOA慢速英语(一)月

美国习惯用语:518 powder...

今天要讲的习惯用语都由这样一个关键词发展而来： powder。大家一定知道powder是粉，可以是扑脸的香粉，也可能是治病的药粉或者爆炸的火药，种类繁多。今天要学的第一个习惯用语是：

发表于:2019-01-14 / 阅读(251) / 评论(0)

美国习惯用语

闭着眼睛飘单词四级词汇35

[0:0]lable laboratory lad lag标签,标记实验室男孩,小伙子落后,滞后 [1:9.3533]lamb landlord landscape lane羔羊，小羊地主，房东，店主风景，景色小路，小巷 [1:52.8522]largely laser latter laughter大部分，主要地激光器后者的，末了的笑，笑声 [2:36.6

发表于:2019-01-16 / 阅读(302) / 评论(0)

闭着眼睛飘单词四级词汇

新西兰英语 618 Baby milk powder shortage

New Zealand mothers are having difficulty finding cans of baby formula in the supermarkets. Some supermarkets are limiting the number of cans to two per customer. The shortage may be because Chinese in New Zealand are buying cans of formula to send b

发表于:2019-01-27 / 阅读(186) / 评论(0)

新西兰英语

新西兰英语 58 Contaminated Baby Milk Powder in China

New Zealand discovered this weekend that a milk powder factory in China, partly owned by the New Zealand dairy company Fonterra, has been selling contaminated baby formula. One baby has died and more than 400 are suffering from kidney problems. Fonte

发表于:2019-01-27 / 阅读(144) / 评论(0)

新西兰英语

Suspicious Powder Discovered on Capitol Hill

Suspicious Powder Discovered on Capitol Hill Deborah Tate Three U.S. Senate office buildings are closed, and congressional business has been disrupted a day after a suspicious powder, believed to be t

发表于:2019-01-31 / 阅读(230) / 评论(0)

VOA2004（上）--各类新闻

VOA常速英语2007年-Scientist in Texas Runs NASA's Lunar Laser Prog

By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti

发表于:2019-01-31 / 阅读(206) / 评论(0)

VOA常速英语2007年（十一月）

美国习惯用语:432 powder puff...

今天我们要讲的习惯用语有一个共同的关键词: powder。大家也许知道powder是粉末。有各种各样的粉末，例如女士化妆用的香粉，还有火药或者病人用的药粉等等。在我们要学的第一个习惯用语

发表于:2019-02-04 / 阅读(240) / 评论(0)

美国习惯用语

新西兰英语 97 Baby milk powder scandal in China, again

Last week, 21 people were found guilty in the case of contaminated baby formula in China. Two men who added melamine to the milk powder will be executed. The chairwoman of San Lu Dairy Company was sentenced to life imprisonment because she knew about

发表于:2019-02-05 / 阅读(180) / 评论(0)

新西兰英语

打印机生产4D裙子量身定做不是梦

As many women know only too well, finding a dress that fits like a glove is no easy task. 许多女人都很明白吧，想要找一条和手套一样合适的裙子可不是容易事。 But a new dress, created using a 3D printer, may be the answer

发表于:2019-02-07 / 阅读(158) / 评论(0)

英语新闻

美国俚语: 逃之夭夭 take a powder

今天要讲的美国俚语由powder发展而来。大家一定知道powder是粉，可以是扑脸的香粉，也可能是治病的药粉或者爆炸的火药，种类繁多。今天要学的第一个习惯用语是： take a powder。习惯用语t

发表于:2019-02-09 / 阅读(195) / 评论(0)

美国俚语

美国俚语:有备无患 keep one's powder dry

今天要学的习惯用语是： keep one's powder dry。在keep one's powder dry这个习惯用语里，powder指枪炮用的火药。以前步兵和水兵把火药装在火药桶里保持干燥，随时取用。要是哪个粗心大意的士兵忘了

发表于:2019-02-09 / 阅读(184) / 评论(0)

美国俚语

英语听力—环球英语 1207 Baby Milk Powder

Voice 1 Welcome to Spotlight. I'm Liz Waid. Voice 2 And I'm Mike Proctor. 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 They were the top-selling milk p

发表于:2019-02-14 / 阅读(144) / 评论(0)

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a. gastroduodenalis

absolute specificity

active improvement trade

asymptotically most powerful test