标签：infestation 相关文章
Locust Plague Swarms Madagascar Madagascar is in the midst of a locust plague and its threatening the food security of more than half the population. The U.N. Food and Agriculture Organization, the FAO, says it will take three years to bring the locu
VOA标准英语2013年(三月)
Asian Bacteria Threatens Florida Orange Trees 亚洲细菌威胁到佛罗里达橘子树 Florida's citrus fruit industry is facing a serious threat from a bacteria carried by an Asian insect. The widespread infestation again highlights the danger of
VOA标准英语2014年(八月)
By Arjun Kohli Nairobi 29 June 2007 In the semi-autonomous region of Puntland in Somalia, a swarm of locusts has stripped fruit trees and crops, causing an agricultural emergency in a country already suffering acute food shortages. Arjun Kohli report
2007年VOA标准英语（六月）
This is one of the most important experiments taking place. The one that could help us understand the degree to which research done so far is relevant to bees in the wild.-So what we know so far? There's a good arguement for saying that diseases and
探索与发现2014年
Tree Deaths Linked to Climate Change Stanford University graduate student William Anderegg has seen this forest die-off firsthand. His doctoral thesis documents the impact of drought on trembling aspen, the most common tree in North America. These ar
VOA标准英语2012年(九月)
Women wait to receive baby food in southern Niger, during the launch of a UN-backed feeding operation aimed at fighting malnutrition among young children, (File) Ending the cycle of hunger in Africa's Sahelian region means reinvesting in local agricu
VOA标准英语2010年(五)月
Washington DC Facing Family Homelessness Crisis With access to affordable housing severely restricted by budget cuts and a rising cost of living, local shelters have been crammed full throughout the winter. Disabled single father Marcaus Scales has b
VOA标准英语2013年(四月)
Cave Dwellers Battled Bed Bug Bites, Too古人也挨臭虫叮 Picture a prehistoric human encampment, in a cave. What do you see? Maybe some animal hides, bones from last night's dinner, a small fire? But what you might not picture are the other cave
2017年Scientific American(四)月
Cave Dwellers Battled Bed Bug Bites, Too古人也挨臭虫叮 Picture a prehistoric human encampment, in a cave. What do you see? Maybe some animal hides, bones from last night's dinner, a small fire? But what you might not picture are the other cave
2017年Scientific American(四)月
China plagued by locusts 中国遭蝗害 Huge swarms of locusts have been destroying crops in northern China - a region which is already suffering from its worst drought in more than a decade. Two areas have been struck by the locust plague at once.
双语有声阅读
By Lisa Schlein Geneva 15 September 2007 The United Nations warns floods in West Africa could provoke an invasion of locusts in Mali and Niger. It says it is critically important that UN experts be given access to the locust-prone region so they can
2007年VOA标准英语（九月）
At least 500,000 Liberians are affected by a plague of caterpillars that is destroying crops, polluting drinking water and spreading to neighboring Guinea. Aryworm At least 100 villages are affected in Liberia's richest agricultural region near the
VOA标准英语2009年(二月)
British humanitarian organization ActionAid is calling for governments in the Horn of Africa to help small-scale farmers and for donor nations to increase funding and food-aid shipments to the region. The organization says without urgent action, sev
VOA标准英语2008年（八月）
The threat from Liberia's caterpillar infestation is not as bad as originally thought. Entomologists have identified the caterpillars as a species that is easier to kill than those first thought to be devouring farmland near the border with Guinea a
VOA标准英语2009年(二月)
Rabbits Down Under In 1859, an unassuming Australian landowner named Thomas Austin got the hunting bug. Eager for something to shoot, he released twenty-four wild rabbits onto his property and had a jolly time tracking them down. Unfortunately, some
英语听力文摘 English Digest