锯齿形激光器

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

发表于:2018-11-27 / 阅读(1112) / 评论(0) 分类 新概念英语词汇随身听手册3

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

发表于:2018-12-04 / 阅读(166) / 评论(0) 分类 2006年星火30篇考研词汇

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

发表于:2018-12-04 / 阅读(198) / 评论(0) 分类 大学英语精读第四册

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。

发表于:2018-12-05 / 阅读(119) / 评论(0) 分类 经济学人商业系列

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(138) / 评论(0) 分类 VOA常速英语2008年(四月)

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

发表于:2018-12-08 / 阅读(528) / 评论(0) 分类 新概念英语第三册

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(122) / 评论(0) 分类 2013年VOA慢速英语(二)月

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

发表于:2018-12-29 / 阅读(119) / 评论(0) 分类 美国学生世界地理教材

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

发表于:2018-12-30 / 阅读(123) / 评论(0) 分类 每日攻克5词

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

发表于:2018-12-30 / 阅读(125) / 评论(0) 分类 国家地理2008年

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

发表于:2019-01-02 / 阅读(128) / 评论(0) 分类 人、艺术、世界

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(132) / 评论(0) 分类 2017年VOA慢速英语(七)月

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(183) / 评论(0) 分类 2013年VOA慢速英语(五)月

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(155) / 评论(0) 分类 2012年VOA慢速英语(一)月

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

发表于:2019-01-29 / 阅读(100) / 评论(0) 分类 世界小史

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(158) / 评论(0) 分类 VOA常速英语2007年(十一月)

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

发表于:2019-02-05 / 阅读(110) / 评论(0) 分类 英语新闻视频

发表于:2019-02-18 / 阅读(135) / 评论(0) 分类 考研英语

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

发表于:2019-02-20 / 阅读(135) / 评论(0) 分类 卡卡课堂早餐英语

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

发表于:2019-02-25 / 阅读(122) / 评论(0) 分类 双语有声阅读
学英语单词
ACC (acceptance)
approach continuous cab signaling
arctalpine community
area distribution
avalanchine
Bakayo
billistic missile
bipinnatum
bound cursor
brole
Cam Lo
centre mould brick
charismatically
cherry-vanilla
chlorampheicol capsules BP
cifes
coded AC phase selective track circuit
Constantine, Cape
Cornus officinalis Sieb.
cottonwood wash
crustal downwarping
default in navigation of the ship
dichocarpum arisanensis
donkey pump
electrolytic surgearrester
emotionalized
epicycloidal and hypocycloidal gea tooth
erichthonius
ethnic cleavage
fixed-pitch propeller
fogan
free-balling
frequency multiplex
garden-party
gathering conveyer
giocosoes
girl talk
glammar
grin at
hash slingers
heterecism
high-energy electron diffraction
impregnator
inserviceable
isobaric mass-change curve
Japanese silk
Lakatos
lamellar keratoplasty
language character set
law leather
locking-out relay
lophozia exsecta dum
mercuroxyl
micromillimeters
monocyclic landforms
muscle rigidity
musculus rectus bulbi anterior
new challenge
new net
NSWTF
okom
orientation diagram
parchment-lace
pass sb by
pay deference to
percentage reduction
permethrinase
point rail of frog
puerto leguizamo
rates relief
requile
Roebourne
Rubus henryi
scenographer
search record
sedimentary cycle
self-serving bias
serous meningitis
shoot from
shortcakes
signaling link
solar photovoltaic
Ssabanejew-Frank operation
sulfur fluorescein
swamp fly honeysuckle
swinging-bucket ditch cleaner
textured finish
Thymine-2-desoxyriboside
TIP (turbine inlet pressure)
Toyós
translational group
trowses
twosideness
ultra-crepidarian
unbricking
ungulous
vertical surface broaching machine
waterline polynomial
weight sensing
weighted sample
whole-arm translocation(muller 1940)
xword puzzle