Having spent the night foraging, 经过了整夜的觅食

258. Today,
     如今
259. one in five of all mammal species is a bat.
     所有哺乳动物中有五分之一是蝙蝠
260. But bats were not the first animals to take to the skies.
     但蝙蝠并不是第一个上天的动物
261. Having spent the night foraging,
     经过了整夜的觅食
262. these fruit bats are in a race to return to the roost...
     这些果蝠竞相返回巢穴
263. ...for with daylight comes danger.
     因为危险会与白天一同来临
264. Birds.
     鸟类

来自《我们星球上的生命 第一季 第七集 Life on Our Planet S01E07 地球继承者》第 261 行