标签：derived 相关文章
For more than 140 years, from the late 1700s to the 1930s, the family-owned Stabler-Leadbeater Apothecary served customers with an amazing assortment of medicines. When the shop closed, the buildings new owner kept it just the way it was, and turned
VOA标准英语2018年(十一月)
The East African Community, a grouping of 5 countries in and around the Horn, is continuing to work towards its goal of regional economic integration. Members of the EAC are dropping barriers to trade, with the goal of eventually adopting a common cu
VOA标准英语2010年(十二)月
34 Raising Oysters In the oysters were raised in much the same way as dirt farmers raised tomatoes- by transplanting them. First, farmers selected the oyster bed, cleared the bottom of old shells and other debris, then scattered clean shells about.
新概念优美背诵短文50篇
After getting a massive infection, it looked like that Franklin Lloyd would lose his right leg. Aggressive antibiotic treatments just werent working and the infection kept spreading wider and deeper. The 67-year-old kidney transplant recipient has a
万花筒2009年
Researcher Explores Native American Herbal Remedies Hikers often explore the foothills of the Angeles National Forest, but this group of hikers has a purpose. They are learning how Native Americans used the local vegetation in their healing, includin
VOA标准英语2013年(六月)
Bad Things Come in Small Packages 拆信小心！ While most armies in the world shun their use, and military authorities exclude them from warfare, the technology to produce biological and chemical weapons is widely available. Moreover, these weapon
双语有声阅读
Rainforests are being cut and burned form Brazil to Indonesia at such a rate that they could well disappear from the earth's surface before the year 2050. They are being cleared for valuable timber and other resources to speed up the economic growth
双语有声阅读
A unique array of underwater listening devices stretches 3,000 kilometers along the west coast of North America to track marine life along the continental shelf. It's like giving fish a cell phone, says Pacific Ocean Shelf Tracking (POST) executive d
VOA标准英语2010年(九)月
Thousands Protest Nuclear Power in Japan Thousands of Japanese took to the streets of Tokyo to protest the country's nuclear-power plants. The rally occured as engineers continue to work on bringing the Fukushima Daiichi plant under control, after it
VOA标准英语2011年(四月)
口诀一：一语法，二逻辑(语义)，三用法，四硬币 这一口诀概括的是托福语法题整体解题思路和策略，其含义是： 一语法：做托福语法题，首先从语法层次开始.在这一层次，正确答案与干扰项
托福英语
DAVID GREENE, HOST: We have been reporting on the rise of some really nasty diseases caused by tick bites - everything from Lyme disease to Rocky Mountain spotted fever. Well, now a new study is shedding light on an old technique to repel ticks that
2018年NPR美国国家公共电台7月
Thousands of Japanese took to the streets of Tokyo to protest the country's nuclear-power plants. The rally occured as engineers continue to work on bringing the Fukushima Daiichi plant under control, after it was smashed by last month's earthquake a
VOA双语新闻 2011年4月
A powerful suicide bomb in Afghanistan has killed the country's deputy chief of the national spy agency and 22 others. Taliban insurgents have claimed responsibility for the deadly attack. The violence comes as the United Nations has reported a signi
VOA双语新闻 2009年9月
Spiders Gobble Gargantuan Numbers of Tiny Prey蜘蛛竟是大胃王 By now, you may have heard about a study that came out a couple of weeks ago about spiders. The study got a lot of attention because coverage of the research often focused on the ide
2017年Scientific American(六)月
By Greg Flakus Houston 16 October 2007 In recent months food costs in the United States have gone up by well over six percent and some economists see government-mandated use of bio-fuels as a key reason. But, as VOA's Greg Flakus reports from Houston
2007年VOA常速英语（十月）
Britain Fears Being Sidelined As US, France Debate Syria Strikes 英国担心因为叙利亚问题被美法边缘化 LONDON As the U.S. considers launching military strikes against Syria over alleged chemical weapons use, there is much concern in Bri
VOA常速英语2013年(九月)
Scotch whiskey is said, by some, to have many magical qualities. Now, scientists in Scotland have discovered one more: it can be a weapon against polluted waste sites. A by-product of the spirit is 99.96 percent effective in cleaning contaminated gr
VOA标准英语2008年(十二月)
Spiders Gobble Gargantuan Numbers of Tiny Prey By now, you may have heard about a study that came out a couple of weeks ago about spiders. The study got a lot of attention because coverage of the research often focused on the idea that spiders could
2018年科学美国人2月
Topic1-Fudan University streamlines admission for rural students Fudan University is reforming its admission process to make it easier for outstanding students in rural areas to gain entrance. How does it work? Its a fair and feasible solution for ed
英语角-圆桌会议
Catnip 猫薄荷是一种草本植物，闻上去非常清凉，是一种可以让猫咪疯狂和开心的植物，所以被广大猫友戏称为猫毒品。猫薄荷，Nepeta cataria，为唇形科荆芥属的植物，茎直立多分枝，茎叶有白
英语听力文摘 English Digest