单词：solenoidcontrolled
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Study: Rats Pose Plague Risk in Croplands Efforts to boost food production in East Africa may increase the risk of plague. A new study says the conversion of natural lands into croplands in Tanzania has been accompanied by a large increase in the rod
VOA标准英语2015年(二月)
Pre-Listening Vocabulary accustomed to: used to tirelessly: without tiring; for long hours surge barrier: man-made protection built to keep the sea from flooding onto the land valve: a device that opens and shuts; changes the direction of fluid Nethe
趣谈英语
Drylands Vulnerable to Climate Change Researchers warn that the worlds drylands are being severely affected by climate change. They say that could harm the livelihoods and food security for billions of people. Scientists describe the projected effect
VOA标准英语2014年(十一月)
DAVID GREENE, HOST: One of the very first moves by the new Republican Congress was to make it easier to transfer ownership of federal public lands in the West over to states. And the state of Wyoming has become a flashpoint in this debate. Lawmakers
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By Gilbert da Costa Abuja 16 October 2006 An international campaign to draw attention to the huge agricultural potential of the Sahel drylands of Africa is gaining ground, with a recent workshop in Niamey, the capital of Niger. The campaign seeks to
2006年VOA标准英语（十月）
我们上次讲了几个来自扑克牌桌的习惯用语。今天我们还要讲几个。第一个是：pass the buck。 Buck原意是雄鹿，但是这里指刀柄是鹿角做成的猎刀。 在早年美国西部这种猎刀几乎人手一把。牌桌
美国习惯用语