标签：系统 相关文章
Weather Forecasters Call for Better Hurricane Prediction Tools 天气预报员呼吁更好的飓风预报系统 With the American Gulf Coast still reeling from the devastation of Hurricane Katrina and
VOA2005（下）--环境科学探索
语法是组词造句的规则，是把合适的词放进合适位置的艺术，语法可分为两大部分：词法和句法。词法包括各类词的形态及其变化，但由于本书是为了帮助有一定英语基础的读者掌握比较系统而完整的英语语法知识，提高运用英语的交际能力，所以主讲各类词的形态变化外，还将系
薄冰实用英语语法详解
American Veterans: Culture Change Needed to Fix Broken Health Care System 美国退伍军人表示需完善卫生保健系统 WASHINGTON As Americans commemorate Memorial Day to honor the country's fallen soldiers, a scandal is unfolding that highlig
VOA标准英语2014年(五月)
Kids learn to count on their fingers, because theyre so, well, handy! And it makes sensemost number systems originally developed as people counted using their fingers. 小孩通过数手指来学习计数，因为这样确实非常方便。由此，最
初学者听力文摘精选
以色列成功测试导弹防御系统 The successful test boosts Arrow 3, which is to become the top-tier missile defense system in Israel's arsenal. A similar test last year failed due to what designers said was a faulty deployment of the target. 以
VOA标准英语2016年(二月)
Economists Divided Over Venezuela's New Forex System 经济学家对委内瑞拉新的外汇交易系统看法不一 In the midst of ongoing anti-government protests, the Venezuelan government has introduced a new currency exchange system to reduce t
VOA标准英语2014年(四月)
The Terminal High Altitude Area Defense or THAAD is a missile defense system. It uses missile to stop missiles. 战区高空区域防御系统(简称THAAD)是一个用于阻止导弹的导弹防御系统。 And the U.S. has deployed the first compone
CNN美国有线新闻2017年3月
A: Its freezing in here! Can I turn up the heat? B: Dont touch that thermostat! You dont pay the bills around here! A: Dad! Are you serious? Whats the point of having central heating if we cant use it! Look, I can see my breath! B: Put on a sweater!
纯正地道美语
Secretary of State Hillary Clinton says the Obama administration might reconsider plans for a missile defense system in Europe, if Iran stopped what U.S. officials believe is a drive for nuclear weapons. Clinton met with Czech Republic Foreign Minist
VOA双语新闻 2009年2月
The top U.S. military officer is in Moscow for talks on missile defense, arms control and other issues in advance of U.S. President Barack Obama's visit to the Russian capital in 10 days. 美国军方高级官员正在莫斯科举行关于导弹防御、
VOA双语新闻 2009年6月
Two key members of Congress raised questions on Monday about the U.S. missile defense plan for Europe, saying that the system is untested and would not protect key American interests from an attack by Iran. And a leading Senator called for more coope
VOA双语新闻 2009年3月
The United States says the reported test of a new Iranian ballistic missile underscores that country's threat to the Middle East and Europe, including Russia, which has opposed a planned U.S. regional missile defense system. Big-power diplomats are e
VOA双语新闻 2008年11月
A Scientist in the Locker Room How do you improve at any sport? You train, train, train. But how you train is just as important as how much. Armed with the science of exercise physiology, todays olympic-class coaches design sophisticated programs for
英语听力文摘 English Digest
Californians participated in an annual drill, and helped prepare for what scientists say could strike at any moment, an earthquake. Scientists have also been busy preparing. The US Geological Survey recently unveiled its new earthquake alert system c
VOA标准英语2019年(二月)
A foraging squirrel comes into range of a hungry, coiled rattlesnake. The squirrel realizes the danger too late-the rattlesnake strikes out and bites, fangs pumping venom deep into the squirrels small body. The poison doesnt kill immediately, but the
英语时差8，16