单词：flathead borer
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In Montana, An Unease Over Extremist Views Moving Out Of The Woods play pause stop mute unmute max volume 00:0007:02repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Fla
2016年NPR美国国家公共电台11月
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
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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
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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
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