GRE必備核心詞組：on the periphery of

　　on the periphery of 在……邊緣

　　釋義

　　If something is on the periphery of an area, place, or thing, it is on the edge of it.

　　例句

　　Geographically, Shanghai is on the periphery of China, while Xi'an is at the heart of the country.

　　GRE

　　If individuals on the edge of a group are more vigilant because they are at greater risk of being captured, then individuals on average would have to be more vigilant in smaller groups, because the animals on the periphery of a group form a greater proportion of the whole group as the size of the group diminishes.

　　如果隊(duì)伍邊緣的個(gè)體會(huì)因?yàn)槿菀妆磺塬@而保持更高的警惕，那么一般來(lái)說(shuō)隊(duì)伍規(guī)模越小體會(huì)們更警惕，因?yàn)楫?dāng)整體規(guī)?？s小時(shí)，處在邊緣的個(gè)體所占的比例上升了。