and in the breeding season there is stiff competition for mates. 在繁殖季节 会有一场激烈的求偶竞赛 The males hold court in a unique way. 雄江豚会以独特的方式向雌江豚示爱 They pick up rocks in their jaws 它们用长嘴捡起石块 and flaunt them to their attending females. 然后向自己的“心上人”炫耀 M...
The males hold court in a unique way. 雄江豚会以独特的方式向雌江豚示爱 They pick up rocks in their jaws 它们用长嘴捡起石块 and flaunt them to their attending females. 然后向自己的“心上人”炫耀 Maybe each male is trying to show how strong and dexterous he is 这或许是雄江豚展示自己 强壮身体和敏捷...
The Amazon is so large and rich in fish 亚马逊河养育着丰富繁多的鱼类 that it can support fresh water dolphins. 为淡水海豚提供了生存条件 These botos are huge - two and a half metres long. 这些亚马逊江豚体型巨大 身长达2.5米 In these murky waters they rely on sonar to navigate and hu...
that it can support fresh water dolphins. 为淡水海豚提供了生存条件 These botos are huge - two and a half metres long. 这些亚马逊江豚体型巨大 身长达2.5米 In these murky waters they rely on sonar to navigate and hunt. 它们利用回声定位 在昏暗的水中探路和捕食 They work together to drive sh...
These botos are huge - two and a half metres long. 这些亚马逊江豚体型巨大 身长达2.5米 In these murky waters they rely on sonar to navigate and hunt. 它们利用回声定位 在昏暗的水中探路和捕食 They work together to drive shoals of fish into the shallows. 它们一起合作把鱼群赶到浅水区 Botos ar...
In these murky waters they rely on sonar to navigate and hunt. 它们利用回声定位 在昏暗的水中探路和捕食 They work together to drive shoals of fish into the shallows. 它们一起合作把鱼群赶到浅水区 Botos are highly social 亚马逊江豚是高度社会型动物 and in the breeding season there is stiff...
Its waters are wonderfully rich. 河水中的物种异常丰富 To date over 3,000 species of their fish have been described - 据统计 被命名的鱼类已达到3000多种 more than in the whole of the Atlantic Ocean. 这比整个大西洋的鱼类种数还要多 The Amazon is so large and rich in fish 亚马逊河养育着丰富繁多...
To date over 3,000 species of their fish have been described - 据统计 被命名的鱼类已达到3000多种 more than in the whole of the Atlantic Ocean. 这比整个大西洋的鱼类种数还要多 The Amazon is so large and rich in fish 亚马逊河养育着丰富繁多的鱼类 that it can support fresh water dolphins...
more than in the whole of the Atlantic Ocean. 这比整个大西洋的鱼类种数还要多 The Amazon is so large and rich in fish 亚马逊河养育着丰富繁多的鱼类 that it can support fresh water dolphins. 为淡水海豚提供了生存条件 These botos are huge - two and a half metres long. 这些亚马逊江豚体型巨大 身长达2....
it empties into the Atlantic Ocean. 亚马逊河汇入了大西洋 The Amazon transports a billion tonnes of sediment a year, 亚马逊河每年会带来10亿吨的泥沙 sediment clearly visible at the mixing of the waters 泥沙使得河水交汇成为一道显眼的风景 where one massive tributary, the Rio Negro, fl...