In a single night, a colugo might have to travel as far as two miles 在一个晚上,鼯猴可以穿行2英里的路程
they march hundreds of miles across the parched plains. 它们在干涸的平原上跋涉几百英里
they can cover nearly 2,000 miles during the summer months. 差不多整个夏季能够行进2000英里
Their marathon migration is almost 3,000 miles long 这场马拉松式的迁徙长达三千英里
0nce an extremely rare sight, polar bears have recently been seen over 60 miles from the shore. 曾经有人在离海岸60英里处发现了北极熊 这种事情是极难碰到的
They head towards their breeding grounds, almost 100 miles inland. 它们要前往繁殖地,几乎在离海岸100英里的内陆
advancing two and a half miles a day. 一天扩大2.5英里
They have travelled over 5,000 miles to reach these waters. 它们经过5000英里的漫长旅程终于来到了这片水域
The birds have flown inland for over 300 miles to reach this breeding site. 它们往内陆飞行300英里才来到这里繁衍