原子时标

Without air, there would be no fire. There would be no cars or trucks, since motors need air in order to work. Without air, there would be no wind or clouds. There would be no weather, as we know it.(

发表于:2018-12-01 / 阅读(339) / 评论(0) 分类 自考英语(一)78讲

Hello, I want a cab. OK. What address is it? 1120 East 32nd Street. Right. The cab will be there in a few minutes. Would you mind passing the salt, please? Certainly. What's your job? I'm an accountant. Oh! Do you enjoy it? No. I don't really like it

发表于:2018-12-03 / 阅读(184) / 评论(0) 分类 初级英语听力

When Stephen Hawking was writing A Brief History of Time, his editors told him that he would lose half of his readers for each equation (方程式) he put in the book. Despite this warning, Hawking found it necessary to include one equation. His choic

发表于:2018-12-04 / 阅读(168) / 评论(0) 分类 人教高中英语高二

Five Minutes to Midnight 滴!答!滴!毁灭倒数计时 by Kevin Lustig The University of Chicago publishes the Bulletin of the Atomic Scientists, a magazine about topics related to nuclear technology. On the cover of every issue of the magazin

发表于:2018-12-08 / 阅读(168) / 评论(0) 分类 常春藤解析英语

The mayor of the Japanese city of Nagasaki has taken time to criticize the Japanese government's refusal to sign a non-proliferation treaty earlier this year. Tomihisa Taue made has blasted the government during the ceremony to mark the atomic bombin

发表于:2018-12-19 / 阅读(150) / 评论(0) 分类 世界各地新闻集锦

[00:00.00]1651.He never gives up. [00:01.06]他很顽固。 [00:02.12]1652.He's in a terrible mood. [00:03.45]他正在大发脾气。 [00:04.78]1653.Is he any better? [00:05.86]他比较好一点儿吗? [00:06.95]1654.You had better wise up. [00:0

发表于:2018-12-24 / 阅读(127) / 评论(0) 分类 美国常用口俚语

[00:06.37]The United States has a new official clock. [00:10.95]The clock began operating late last year in the American city of Boulder,Colorado. [00:18.39]Experts say the new clock is so exact that it will neither gain nor lose so much as one secon

发表于:2018-12-26 / 阅读(191) / 评论(0) 分类 美国英语听力80篇

There is one name in____ that ____through the English language even today. You may have ____people say, It doesn't take an Einstein to___ that or he is no Einstein. For more than fifty years, Albert Einstein has stood___ as the world____ of brain pow

发表于:2018-12-30 / 阅读(193) / 评论(0) 分类 听听测测

VOA Learning English presents Americas Presidents. Today we are talking about Harry S. Truman. He became president of the United States in 1945, a few weeks before the end of World War II in Europe. Truman took office after Franklin Roosevelt died su

发表于:2019-01-03 / 阅读(148) / 评论(0) 分类 2017年VOA慢速英语(十)月

Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol

发表于:2019-01-08 / 阅读(173) / 评论(0) 分类 Scientific American(八)月

At the Stagedoor Manor summer camp theater, kids from all over the world put on 13 full-scale productions in three weeks. Among the many specialty summer camps in the U.S. are drama camps, where youngsters learn about theater and put on a play. There

发表于:2019-01-13 / 阅读(151) / 评论(0) 分类 VOA标准英语2010年(八)月

GWEN IFILL:Finally tonight, the tale of a top-secret town with a top-secret mission and the women who made history there. Ray Suarez has our book conversation. RAY SUAREZ:During the mid-1940s, thousands of young women got offers of good-paying jobs w

发表于:2019-01-27 / 阅读(185) / 评论(0) 分类 PBS访谈娱乐系列

We all know time is a construct, and right now, it's kept by the very precise tick of an international network of around 500 atomic clocks. 我们都知道时间是个复杂的概念。目前,世界上有一个由大约500台原子钟组成的网络,

发表于:2019-02-01 / 阅读(148) / 评论(0) 分类 阅读空间

By Mil Arcega Washington, DC 19 June 2006 watch Gates Retire report Bill Gates (file photo) Bill Gates, the man who built the world's largest software company, says he will give up his daily management duties at Microsoft in two years to devote more

发表于:2019-02-03 / 阅读(202) / 评论(0) 分类 2006年VOA标准英语(六月)

lyra 乐徽 rhythm 节奏 rhythmic pattern 节奏型 accent 重音 syncopation 切分音 meter 拍子 (time) duple meter(s) 二拍子 (2/2,2/4,2/8) triple meter(s) 三拍子 (3/2,3/4,3/8) quadruple meter(s) 四拍子 (4/2,4/4,4/8) common meter 普通拍

发表于:2019-02-07 / 阅读(144) / 评论(0) 分类 英语口译

My job at Twitter is to ensure user trust, protect user rights and keep users safe, both from each other and, at times, from themselves. Let's talk about what scale looks like at Twitter. Back in January 2009, we saw more than two million new tweets

发表于:2019-02-16 / 阅读(145) / 评论(0) 分类 英语语言学习

1.新产品的生产经营计划; 2.公司现有的生产技术能力; 3.品质控制和质量改进能力; 4.现有生产设备或将要购置的生产设备; 5.改进或购置生产设备的成本; 6.现有的生产工艺流程

发表于:2019-02-16 / 阅读(139) / 评论(0) 分类 实用英语

本期内容: Auticon, previously known as Mindspark, is one of only a handful of companies that cater exclusively for employees who are on the autistic spectrum. It was founded by Gray Benoist who, as the father of two autistic sons, saw few optio

发表于:2019-02-20 / 阅读(149) / 评论(0) 分类 夏说英语新闻晨读

Hello, I want a cab. OK. What address is it? 1120 East 32nd Street. Right. The cab will be there in a few minutes. Would you mind passing the salt, please? Certainly. What's your job? I'm an accountant. Oh! Do you enjoy it? No. I don't really like it

发表于:2019-02-26 / 阅读(221) / 评论(0) 分类 初级英语听力新版

今天我们要学的词是on hold。On hold 意思是暂时保留、搁置。The parts of Trump's executive order that prevent people from entering the US remain on hold. 川普的行政令中阻止人们进入美国境内的那部分依旧是被暂时

发表于:2019-03-07 / 阅读(208) / 评论(0) 分类 英语单词荟萃
学英语单词
-exine
about-sledge
additional control
adjoint linear operator
air distillation
alabaster powder
alkali-binding agent
Am Nabak
android pelvis
anno aetatis suae
as grave as a judge
binding plant
bio-chemical room
blomefield
bold as a lion
bowand
bridge front bulkhead
calcium albuminate
catecholate
clubs & interests
concentration by electrodecantation
consimilitude
continuity of data
critical evaluation
crostini
dead reckoning analyzer
digi
dynamic exactness
earth-quake sickness
electronic secretary
eroticizes
extra-quranic
face width of wormwheel
fannia prisca
flux jump stabilization
frequency moment
fungoid new growth on the lips
genus Gymnocarpium
geocentric system
granular carbon
guernsey i.
heterotonic
hexamethyl melamine
jeit
jordan-walker
konstantinovskaya
large-leaved
laser sonar
lay-off
linear regulator problem
make a score off
marbled polecats
measured service
Merc
mesoxalic acid diethyl ester
mini-launcher
muralism
nonferrous metal metallurgy
nuclear stain
olmsted palmoplantar keratoderma
one-another
osteodifferentiation
outbegged
Pacific-rim
partial package boiler
phase shift magnetometer
piccolomini
plane table triangulation
pneumatic cylinder cock valve
polyglandular
porcelet
proved area
pseudergates
punctrella dorcas
Pārāgaon
Razvil'noye
re-vitalise
reckon without sth
rendezvous area
restation
Rhipicentor
salicylism reaction
sargassum plagiophyllum
Sen Suvan
soft plastic bottle
soil thermal capacity
SPSDR
step index fiber optic cable
take photos
Tellyesniczky's fluid
the strait of gibraltar
thermal death points
thin-layer electrochemistry
transsphenoidal
unjuried
unrevengefully
vacuum packaging machine
vomiting
wash out
wire tramway
wylys
zacatecano