单词:zigzag solid laser
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Lesson 38 calendar 历法,日历 Up to now,historians have assumed that calendars came into being 迄今为止,历史学家一直认为日历是随农业出现而产生的, with the advent of agriculture, for then man was faced with a real need
Unit 04 Big Tom55 大个子汤姆 我至今怀念与同事大个子汤姆一起的时光,他身体强壮却从不盛气凌人,有时候冒出的奇特想法让人莫名其妙却又无法拒绝。然而,一次随意的决定使他遭受了生命危险 Of all the males in our companys dormitory, I felt the most affection fo
Text In 1976, during America's bicetennial celebration, a family decided to travel to the American West instead of joining the majority of people that were celebrating on the East Coast. They wanted t
Many countries, including Australia, Britain and Canada, have privatised air-traffic services or turned them into state-owned firms. 许多国家,包括澳大利亚、英国和加拿大,已经私有化的空中交通服务或转为国有企业。
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
Lesson 39:Nothing to worry about 不必担心 Listen to the tape then answer the question below. 听录音,然后回答以下问题。 What was the difference between Bruce's behaviour and that of other people? The rough across the plain soon became
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
There is a town at the top of the Holy Land with a name like a boy'sDan. 圣地的顶端有一个小镇,镇的名字像一个男孩子的名字但; Down at the bottom of the Holy Land is another town called Beersheba; 圣地的底端还有一个城
说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 knit [ nit ] Mother is knitting a swea
April 18, 1906, California's San Andreas Fault snaps, shaking San Francisco for nearly 60 terrifying seconds .When the trembling stops, the disaster is only beginning. Gas lines rupture, setting off massive fires, some 700 people die. Most of the ci
Now, an ambitious new idea began to take hold in Lewis Williams' mind because he was aware that there were other rock paintings which were very similar to those painted by the San. These were many tho
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
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
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
Next to these brightly colored paintings you often see lots of tiny pictures of all sorts of things, 在这一排排彩色画像的旁边,你往往会看到许多画着各种各样的东西的小画像, such as owls and little people, flags, flow
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
Precise length of Great Wall: 21,196.18 km Precisely, how long is the Great Wall? This has been a long-unanswered question, as many dynasties in Chinese history built, modified or extended the Great Wall. But now, the State Administration of Cultural
英语中有一种很有意思的词汇和叠词类似,是由两个结构相近、尾音相似的词语组合,可作为形容词、副词、动词或名词。因为读起来琅琅上口,很有节奏感,这类词便被称为叠声词。他们结
The Alaska Pipeline The Alaska pipeline starts at the frozen edge of the Arctic ocean. It stretches southward across the largest and northernmost state in the United States,ending at a remote ice free seaport village nearly 800 miles from where it be