- and that he therefore is the best father a female could have for her young.
以此来证明自己将是最好的父亲 雌江豚为了孩子就应该选它 - Successful displays lead to mating.
求爱成功后 它们便开始交配 - Even for giant rivers like the Amazon
即使像亚马逊河这般巨大的江河 - the journey to the sea is not always smooth or uninterrupted.
流向大海的过程也并非都是平缓连续的 - Iguassu Falls on the border of Brazil and Argentina
位于巴西和阿根廷边境的伊瓜苏瀑布 - is one of the widest waterfalls in the world -
是世界上最宽的瀑布之一 - one and a half miles across.
宽幅达1.5英里
the journey to the sea is not always smooth or uninterrupted. 流向大海的过程也并非都是平缓连续的
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