单词：well borer
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单词：well borer 相关文章
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
发表于:2019-01-11 / 阅读(107) / 评论(0)
VOA慢速英语2007年（二）月
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
发表于:2019-01-14 / 阅读(86) / 评论(0)
VOA标准英语2014年(七月)
VOA标准英语2014年(七月)
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
发表于:2019-02-06 / 阅读(122) / 评论(0)
英文语法词汇
英文语法词汇