Younger dolphins lie alongside, watching 年轻的海豚在远处观看
so the dolphins try another technique. 海豚于是开始用另一种技巧
these dolphins have taken on an ever tougher challenge. 这些海豚面临着一个巨大挑战
Tail slapping is a method dolphins often use to stun their prey 用有力的尾巴击晕猎物是海豚们常用的方法
but bottlenose dolphins are inquisitive, energetic,1 and very intelligent 象宽吻海豚这种又好奇 又聪明伶俐又精神充沛的动物
that it can support fresh water dolphins. 为淡水海豚提供了生存条件