2015考研英语阅读蜣螂如何导航_大学英语阅读

2015考研英语阅读蜣螂如何导航

　　10只蜣螂戴着薄纸板做的帽子，这样他们就看不到天空了。作为对比，其他9只蜣螂戴上了透明塑料制成的帽子。

　　The beetles and their dung balls were then released in the centre of a circular arena madeof flattened sand and enclosed by a featureless circular wall.

　　这些蜣螂和它们的粪球都被放在了一个平铺着沙子圆形场地的中央，场地的围墙也没有什么特别之处。

　　As the beetles rolled away under a moonless night sky they were filmed by infra-redcameras.

　　在没有月亮的晚上，红外线摄影机记录蜣螂搬运粪球的活动。

　　The team found that the beetles prevented from seeing the sky by their caps had path lengthsthat averaged 476.7cm, much longer than the average of 143.4cm travelled by the beetleswearing clear hats.

　　试验人员发现被帽子遮挡了天空的蜣螂平均行走476.7cm，远远超出戴着透明帽子的蜣螂的平均路程143.4cm。

　　As the beetles might have used other overhead landmarks, like trees,

　　因为蜣螂可能使用位于高处的其他地标。

　　a second arena was built with a high black wall and a small, dry moat around it.

　　第二个场地是黑色高墙围起来的，

　　This time the beetlesminus their hatswere timed to see how long it took them to roll theirballs from the centre to the point where they could be heard falling into the moat.