It means that it can be transmitted from one animal group, to another.

这意味著，它可以从一个动物组，到另一个。

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Standing in Tennessee's Clinch River, a marine biologist holds three species of freshwater mussel, the most endangered animal group in North America.

淡水植物和动物：图片画廊。站立在田纳西州的钳河，意味海洋生物学家手持三个物种的淡菜，几乎全部的濒临灭绝的动物群在北美。

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When "Rise of the Planet of the Apes" was first shown to the public last month, a group of excited animal activists gathered on Hollywood Boulevard.

上个月，当《人猿星球的崛起》首次向公众放映时，一群兴奋的动物保护者聚集在好莱坞大道上。

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But the group has a new ambulance with devices for lifting a camel to drive it to an animal hospital.

VOA: special.2009.01.13

Among the project's findings is one that a group of Antarctic islands are richer in animal life than the world famous Galapagos Islands.

VOA: special.2009.01.13

(Music) Animal Collective is a music group made up of four friends who met in Baltimore,Maryland.

VOA: special.2009.12.11

However, dogs primarily catch the virus while in close quarters with other dogs that are coughing and sneezing, says Steven Shell, head of Merck's U.S. companion animal group.

WSJ: A New Breed of Flu Shot to Avoid Getting Sick as a Dog

There is an existing and praiseworthy animal rights group called Best Friends Animal Society.

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In June, company owner Jack DeCoster admitted to 10 civil counts of animal cruelty in Maine after a nonprofit animal welfare group conducted an undercover video investigation and forwarded its findings to Maine animal welfare officials.

CNN: No further egg recalls expected, feds say