“想像你每天和同样的三个人出去玩，”珀拉德补充道，他是洛杉矶加州大学生态学与进化生物学学院的一名研究人员。

"Imagine if you hung out with the same three people every day," added Pollard, a researcher in the Department of Ecology and Evolutionary Biology at the University of California, Los Angeles.

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本文从病原及其分子生物学特点、分布与生态学以及致病机理三个方面对水泡性口炎的研究进展进行综述。

This article sums up the research progress of vesicular stomatitis from pathogen and its molecular biology features, distribution, ecology and disease mechanism.

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生态学，是生物学的一个分支，研究生物与环境，生物与生物之间的关系和相互作用。

Ecology is a branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms.

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