n. 侵袭性;[医] 侵入力

Researchers Find Bright Side to Some Invasive Species Non-native species present threats to natural environments across the world by pushing out native organisms. Their presence can seriously damage ecosystems that provide clean water, food and other

发表于:2018-12-16 / 阅读(178) / 评论(0) 分类 2018年VOA慢速英语(十)月

Darwin's fabled isles, the Galapagos, are in need of a makeover. And removing invasive species of plants tops the to-do list for the islands restoration. But six species that were set to be exterminated have gotten a reprieve. Because a new study fin

发表于:2018-12-24 / 阅读(207) / 评论(0) 分类 Scientific American(十一)月

We've lost our dog. Luckily he has a tag around his collar and he is also microchipped. It's a smart idea to get your dog microchipped. The microchip is inserted under the skin of the animal. It is done at a veterinarian's office or an animal shelter

发表于:2018-12-28 / 阅读(264) / 评论(0) 分类 中级类英语听力

By Adam Freedman Todays topic: can a business refuse to accept cash? But first, your daily dose of legalese: This podcast does not create an attorney-client relationship with any listener. In other words, although I am a lawyer, Im not your lawyer. I

发表于:2018-12-30 / 阅读(250) / 评论(0) 分类 法律英语 Legal Lad

By Greg Flakus Houston 02 August 2007 A bridge spanning the Mississippi River in the Midwestern city of Minneapolis collapsed Wednesday, during the evening rush hour, dumping scores of vehicles into the river. At least seven people died and local hos

发表于:2019-01-07 / 阅读(290) / 评论(0) 分类 2007年VOA标准英语(八月)

Invasive species get a bad rapbut we humans are usually to blame for their spread. Take Japanese stiltgrass, an invasive that arrived from Asia nearly 100 years ago as a packing material for porcelain. When it creeps into forests, it forms dense carp

发表于:2019-01-08 / 阅读(180) / 评论(0) 分类 Scientific American(八)月

By Melinda Smith Washington, DC 27 July 2006 watch Surgery report Having surgery used to mean the permanent memento of an ugly scar. But the trend in modern surgery is something called M.I.P., which stands for Minimally Invasive Procedure. There are

发表于:2019-01-12 / 阅读(211) / 评论(0) 分类 2006年VOA标准英语(七月)

By Meredith Buel Washington 20 April 2006 Michael Chertoff, left, listens as Julie Myers gives remarks at Immigration and Customs Enforcement headquarters U.S. immigration agents have arrested seven e

发表于:2019-01-13 / 阅读(284) / 评论(0) 分类 2006年VOA标准英语(四月)

By Jeff Swicord Washington, DC 01 May 2006 watch Immigration report One of the major issues before the U.S. Congress is immigration reform. There are many sides to the debate -- including how any chan

发表于:2019-01-13 / 阅读(269) / 评论(0) 分类 2006年VOA标准英语(五月)

Business leaders in Cape Verde are responding to their country's ascension to the World Trade Organization. While business leaders agree the measure should enhance the competitiveness of the island nation, Brent Latham reports from our West Africa b

发表于:2019-01-13 / 阅读(259) / 评论(0) 分类 VOA标准英语2008年(七月)

Commerical fisherman Chad Isaak and a partner haul in a boatload of invasive Asian Carp, Jul 2010 The multi-billion-dollar commercial fishing industry in the Great Lakes region of the United States employs more than 800,000 people, but is threatened

发表于:2019-01-13 / 阅读(178) / 评论(0) 分类 VOA标准英语2010年(七)月

There's a good reason why people should be concerned about having a healthy environment containing lots of animal and plant species. A new study says the loss of biodiversity may make humans more vulnerable to infectious diseases. Biodiversity is one

发表于:2019-01-13 / 阅读(222) / 评论(0) 分类 VOA标准英语2010年(十二)月

Don: Today, on A Moment of Science, the Ocean's Most Wanted. Sure, they might seem innocent and downright lovely in your aquarium, but released into the wild, your plants and fish can knock aquatic ecosystems right out of balance. Today's invasive sp

发表于:2019-01-22 / 阅读(238) / 评论(0) 分类 英语时差8,16

By Carol Pearson Washington 11 October 2007 One third of the land in the United States belongs to the public. And once a year Americans get a chance to help make these public lands beautiful and healthy for generations to come. VOA's June Soh visited

发表于:2019-01-25 / 阅读(182) / 评论(0) 分类 2007年VOA常速英语(十月)

Lionfish are taking over coral reefs in the Caribbean and Atlantic. Here, Lad Akins catches one. In the waters of the Caribbean Sea, a voracious invasive species called the lionfish is threatening to overtake the reefs. Conservation groups are fighti

发表于:2019-01-31 / 阅读(156) / 评论(0) 分类 VOA标准英语2010年(七)月

By Catherine Drew Berlin 08 June 2006 watch World Cup Economics The 2006 World Cup will see millions of soccer fans descend on Germany for four weeks of football madness. In that time each visitor is expected to spend around $400 (U.S.) a day. In th

发表于:2019-02-04 / 阅读(234) / 评论(0) 分类 2006年VOA标准英语(六月)

The U.S. economy had a net gain of 227,000 jobs in February, while the unemployment rate held steady at 8.3 percent. Some industry experts say Friday's employment data is the latest in a series of generally upbeat economic reports showing the economy

发表于:2019-02-04 / 阅读(213) / 评论(0) 分类 英语新闻

By Meredith Buel Cambridge, Maryland 13 June 2007 President Bush is urging members of the U.S. Congress to resurrect a bill designed to reform the nation's immigration policies. The bill has stalled in the Senate and lawmakers are negotiating comprom

发表于:2019-02-04 / 阅读(235) / 评论(0) 分类 2007年VOA标准英语(六月)

Okay, here it is. 好啦,就是这里啦。 The date is June 24th. 今天是六月二十四号。 I've found what I believe to be a cave. 我猜我发现的这是一个穴居。 Oh. This furniture looks handmade. 噢,这家具是手工制作的。

发表于:2019-02-08 / 阅读(209) / 评论(0) 分类 咱们裸熊

Science and technology 科学技术 Invasive species 入侵物种 Boom and bust 繁衍与湮灭 Invasive Argentine ants may be less persistent than once feared 入侵性阿根廷蚂蚁可能没有想象的那么可怕 Ready for take-off 随时准备离

发表于:2019-02-16 / 阅读(213) / 评论(0) 分类 经济学人科技系列
学英语单词
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