by detecting distortions in the electric field they create around their bodies. 它们在身体周围形成电场 并感知其变化
After dark, predatory dolphin fish emerge from their daytime lairs among the rocks. 到了晚上 掠食性的长颌鱼纷纷 游出它们白天潜伏的石缝
but some end their journey in vast lakes. 可有些河流的终点却是大型湖泊
rivers slow down and lose their destructive power. 河水流速变慢 没有了原来的破坏力
Lines of wildebeest are on their march. 一队队的角马正在迁徙途中
Adults share their catches with their squabbling cubs. 成年水獭把“战利品”与幼崽一起分享 小家伙们立刻抢成一团