单词：potyvirus cowpea aphid-borne mosaic virus
单词：potyvirus cowpea aphid-borne mosaic virus 相关文章
This is the VOA Special English Agriculture Report. Wheat supplies around the world are at their lowest level in thirty years. Wheat supplies in the United States are at their lowest in sixty years. But the United Nations Food and Agriculture Organi
VOA慢速英语2008年（二）月
CANBERRA, Sept. 6 (Xinhua) -- A rare virus that can be contracted by humans has killed a large number of Victorian pigeons after being detected in the Australian state for the first time, Agriculture Department confirmed on Tuesday. According to the
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LAKSHMI SINGH, HOST: Ticks are known to carry Lyme disease. You probably already know that. But there are about a dozen other diseases carried by ticks that are cropping up and spreading across this country. It's part of a trend around the world. Ove
2017年NPR美国国家公共电台3月
Smartphones are being used to combat the dreaded mosquito in Italy, with a new app that tracks the location of the blood-sucking pests. 意大利人很怕蚊子，于是用上智能手机来抵御蚊害：一种新开发的应用程序将能追踪到这
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本期内容： American scientists announced that they had cloned the Zika virus. This is an important stage in producing a safe version of the pathogen to be used in a vaccine against the mosquito-borne illness, which has been linked to brain defor
夏说英语新闻晨读
South Korea's Olympic committee has unveiled special clothing to protect athletes from the Zika virus when they go to Brazil. The committee said the long-sleeved shirts and trousers would help protect the athletes from the mosquito-borne virus at the
cctv9英语新闻2016年