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This is the VOA Special English Agriculture Report. A beetle invasion in the United States has killed at least twenty million ash trees. The invasion of the emerald ash borer was first discovered near Detroit, Michigan, in two thousand two. Experts b
VOA慢速英语2007年（二）月
Wasp Recruited to Fight Invasive Beetle 美用黄蜂对抗甲虫入侵 Scientists are pitting insects against insects in a battle to control an invasive species. U.S. Department of Agriculture researchers have released tiny parasitic wasps in forests
VOA标准英语2014年(七月)
By Jim Randle Irbil, Iraq 05 October 2006 U.S. Secretary of State Condoleezza Rice made a surprise visit to Baghdad to meet with Iraqi and U.S. officials on ways to quell violence in Iraq. Condoleezza Rice (left) with Iraqi PM al-Maliki, right, in B
2006年VOA标准英语（十月）
bed, deposit, field 书馆 矿床 outcrop 露头 fault 断层 vein, sean, lode 矿脉 gold reef 金矿矿脉 pocket 矿穴 reservoir 储藏 water table 潜水面，地下水面 mine 矿 stratum, layer 矿
英文语法词汇
By Nico Colombant Dakar 11 April 2008 Governments across West Africa are working hard to avoid more protests about the soaring cost of living. As VOA's Nico Colombant reports from our bureau in Dakar, governments are reducing prices where they can an
VOA常速英语2008年（四月）
今天我们要学的词是stem from. Stem spelled s-t-e-m, stem; and f-r-o-m, from. Stem from是源自，来源于的意思。The UN said Syrian government forces are responsible for most of the violence stemming from the country's unrest. 联合国表
英语单词荟萃