“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.

youdao

“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.

youdao