标签：mineral 相关文章
block and tackle 滑轮组 boring 钻孔 circulate 注入，环流 coring bit 取芯钻头 cutting bit 钻头 cylinder 圆柱体 derrick 井架 drill pipe 钻杆 every so often 时常 geologist 地质学家 gusher 喷油井 mineral 矿物的 rotate 使
新概念英语第四册单词MP3
VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Bob Doughty. Today we tell about osteoporosis, a disease that can make bones weak so they break easily. (MUSIC) VOICE ONE: An x-ray of a bone fract
VOA慢速英语2009年（四）月
AS IT IS 2014-02-22 Gold Gains Importance in DRC Conflict 黄金是刚果民主共和国冲突的重要因素 Welcome to As It Is, from VOA Learning English! Im Bob Doughty in Washington. Today on the program, some nations are attempting to cut links
2014年VOA慢速英语(三)月
Researcher: Vitamins and Mineral Supplements Slow Progression of HIV 补充维生素和矿物质放缓艾滋发展 WASHINGTON Patients with HIV, the virus that causes AIDS, often develop vitamin deficiencies. A new study has found that giving these p
VOA常速英语2013年(十一月)
By Lisa Schlein Geneva 16 October 2007 A new report finds growth in foreign direct investment (FDI) last year was the largest since 2000 and occurred in all regions of the world. In its annual World Investment Report , the U.N. Conference on Trade an
2007年VOA常速英语（十月）
By Kurt Achin Seoul 26 July 2007 South Korea says kidnappers who killed a South Korean hostage in Afghanistan will be held accountable for their actions. As family and friends of the victim mourn, South Korean negotiators are trying to save the lives
2007年VOA标准英语（七月）
AS IT IS 2014-01-12 WHO: Test, Treat Malnourished Children for HIV 世卫组织帮助营养不良儿童治疗艾滋病毒 From VOA Learning English, welcome to As It Is. Im Steve Ember. Today on our program, we tell about a study that shows vitamins
2014年VOA慢速英语(一)月
By Phuong Tran Dakar 08 September 2007 Civil society groups are marching in Niger's capital Saturday to demand that the French nuclear energy company, Areva, quit mining Niger's uranium. The march comes after months of government accusations that the
2007年VOA标准英语（九月）
By Phuong Tran Air Mountains, Niger 01 April 2008 Over the past year, desert nomad rebels in northern Niger have renewed violence against government targets in the uranium-rich Saharan region because of what the rebels say is continued neglect and di
VOA常速英语2008年（四月）
By Phuong Tran Northern Niger 25 February 2008 In West Africa, Niger's ethnic Tuareg fighters have periodically led attacks for almost two decades against the government, demanding more autonomy and a greater share of uranium mining revenues in the d
VOA常速英语2008年（二月）
今天给大家介绍一个有趣的词语rodeo。不少人欣赏美国的西部牛仔风格，而rodeo恰恰表示“牛仔竞技表演，骑术表演”，怎么样，别有一番美国风味吧？
英文语法词汇
By Phuong Tran Dakar 12 February 2008 A dozen West and Central African countries are pressing mining companies for a bigger share of growing revenues, discussing the issue with industry leaders during a two-day meeting this week in Guinea's capital,
VOA常速英语2008年（二月）