But how did one man and a spear produce the huge force behind this blow? The answer lies with small bits of ivory like this. They were once part of an atlatl, or spear thrower. An atlatl acts as a sort of catapult, magnifying the strength of a hunter

发表于:2018-12-03 / 阅读(43) / 评论(0) 分类 探索与发现2012年

THE UNKNOWN SOUTHERN LAND The unknown southern land was an imaginary continent, appearing on European maps from the fifteenth to the eighteenth century. It was first put there by a Greek map maker in the first century AD. He believed that south of t

发表于:2018-12-04 / 阅读(30) / 评论(0) 分类 人教全日制普通高中英语(必修)高三(全一册)

FAO Opens Africa Conference 粮农组织召开非洲会议 The Food and Agriculture Organization says Africa is the worlds most food insecure continent. The U.N. agency is holding its 28th Regional Conference on Africa this week in Tunis. The FAO gav

发表于:2018-12-08 / 阅读(26) / 评论(0) 分类 VOA标准英语2014年(三月)

chimney connect continent double draw in European fear in the centre of invasion officially port put forward sea level serve as tunnel ventilate ventilation

发表于:2018-12-17 / 阅读(74) / 评论(0) 分类 新概念英语第二册单词MP3

The U.S. Defense Department says it is committed to launching its new Africa Command on time in October, and with the same capabilities as other major U.S. military commands. Deputy Assistant Secretary of Defense Theresa Whelan made the comment in a

发表于:2018-12-19 / 阅读(24) / 评论(0) 分类 VOA双语新闻 2008年5月

Africa: Future Worldwide Science Hub In a couple of decades from now Africa is going to be the powerhouse of human capital globallythe youngest continent in terms of young demography. 从现在开始的几十年内,非洲将成为全球人力资本的

发表于:2018-12-24 / 阅读(42) / 评论(0) 分类 2018年科学美国人5月

The Taiga forest marks the end of our journey through the Arctic from the frozen ocean down across the lands that surround it The other end of our planet, the Antarctic is starkly different. A frozen continent completely surrounded by ocean. Icebergs

发表于:2018-12-26 / 阅读(34) / 评论(0) 分类 自然百科2012年

By Kari Barber Dakar 03 October 2007 When the United States officially launched a new military command for Africa, this week, several countries on the continent reacted positively to the new post. Liberia even offered its own territory as a possible

发表于:2019-01-09 / 阅读(37) / 评论(0) 分类 2007年VOA常速英语(十月)

This week, the U.N. General Assembly holds its annual debate. On the sidelines, world leaders will discuss some of the planet's most pressing problems - among them, poverty and development in Africa. From United Nation's headquarters in New York, VO

发表于:2019-01-13 / 阅读(50) / 评论(0) 分类 VOA标准英语2008年(九月)

Obama Means Business During Africa Trip JOHANNESBURG This is only Obamas second trip to sub-Saharan Africa, after he made a brief stop in 2009 in the West African nation of Ghana. There, he spoke about the importance of democracy. This time, his focu

发表于:2019-01-14 / 阅读(50) / 评论(0) 分类 VOA标准英语2013年(六月)

布鲁塞尔担心英国退欧将产生更为深远的影响 The Washington-based Pew Research Center interviewed 10,000 people across Europe. 华盛顿皮尤研究中心对欧洲的10,000人进行了采访。 Their answers showed that skepticism ove

发表于:2019-01-14 / 阅读(45) / 评论(0) 分类 VOA标准英语2016年(六月)

今天我们要学的词是motivational。 Motivational, 意思是激励人心的。 U.S. first lady Michelle Obama delivered a motivational speech to Africa's young leadership, calling them to take action for the continent's future, 美国第一夫人

发表于:2019-01-16 / 阅读(48) / 评论(0) 分类 英语单词荟萃

The World Bank is predicting growth rates in Africa in 2009 could fall to half what they have been in the past few years. World Bank Vice President for Africa Obi Ezekwesili, attending the African Union summit in the Ethiopian capital, Addis Ababa,

发表于:2019-01-31 / 阅读(44) / 评论(0) 分类 VOA标准英语2009年(二月)

By Peter Heinlein Addis Ababa 18 December 2007 The African Union has inaugurated a panel of distinguished citizens to promote efforts to prevent conflict on a continent that has seen more than its share of wars. VOA's Peter Heinlein reports from AU h

发表于:2019-02-02 / 阅读(41) / 评论(0) 分类 VOA常速英语2007年(十二月)

By Kari Barber Dakar, Ougadougou 14 November 2007 On a stop in Burkina Faso, U.S. Deputy Secretary of State John Negroponte talked about U.S. plans for a new military command for Africa. The command has been controversial on the continent where some

发表于:2019-02-03 / 阅读(47) / 评论(0) 分类 VOA常速英语2007年(十一月)

For Ghana, it'snot just one nation thatexpects, but a whole continent, asAfrica unites to cheer them on. I'm from Ghana, I'mfrom Ghana, I'm supportingthe whole Africa, supporting the Ghana, do bless them, just I don't,we do know.....I know, I know Gh

发表于:2019-02-03 / 阅读(25) / 评论(0) 分类 英伦广角

今天我们要学的词是equip with。Equip with, 意思是装备有,配有。最近美国官员在美国和墨西哥边境发现了一条贩毒地道。 The 400-meter tunnel was equipped with structural supports, electricity and a ventilation sy

发表于:2019-02-03 / 阅读(57) / 评论(0) 分类 英语单词荟萃

By Carolyn Weaver Washington, DC 04 August 2006 watch World Bank Aid Malaria and HIV/AIDS still afflict Africans disproportionately When he became World Bank president 14 months ago, Paul Wolfowitz said it was clear that Africa had to be at the top

发表于:2019-02-06 / 阅读(87) / 评论(0) 分类 2006年VOA标准英语(八月)

African Leaders Discuss Democracy, Investment with Obama It was in front of a crowd of hundreds that leaders of Malawi, Sierra Leone, Senegal, and Cape Verde spoke about the big gains their countries have made in the last few years. For the president

发表于:2019-02-07 / 阅读(67) / 评论(0) 分类 VOA标准英语2013年(四月)

By Alisha Ryu Nairobi 11 April 2008 The head of the new U.S. military command for Africa says the United States has no plans to move its headquarters to an African location once it becomes a full-fledged command in October. U.S. Army General William

发表于:2019-02-17 / 阅读(61) / 评论(0) 分类 VOA常速英语2008年(四月)