亚马逊河豚和我们钟爱的鳍状肢动物一点儿都不像。
Amazon dolphins bear little resemblance to our beloved Flipper.
哈密尔顿推测，当这片内陆海退去，亚马逊河豚在流域留了下来，逐渐进化为一种恐怖动物。
When this inland sea retreated, Hamilton hypothesizes, the Amazon dolphins remained in the river basin, evolving into striking creatures.
每年春天，亚马逊河豚离开所属河道的范围，到从前的栖地去晃一晃。
Every spring the Amazon dolphins get to leave the confines of their river channel for a taste of their former habitat.
在Mamirauá R保护区，马丁发现在过去7年里，亚马逊河豚数量已经下降了一半。
At the Mamirauá Reserve, Martin's study population has declined by half over the past seven years.
相比而言，亚马逊河豚算是泡在蜜罐里了。虽然尚未探明准确数量，马丁认为至少有100000只。
The Amazon species probably has the best prospects; though its numbers are uncertain, Martin thinks at least 100,000 are left.
哈密尔顿推测，当这片内陆海退去，亚马逊河豚却留了下来，逐渐进化为一种恐怖动物，与我们钟爱的鳍状肢动物，外貌上已大相径庭了。
When this inland sea retreated, Hamilton hypothesizes, the Amazon dolphins remained in the river basin, evolving into striking creatures that bear little resemblance to our beloved Flipper.
哈密尔顿推测，当这片内陆海退去，亚马逊河豚却留了下来，逐渐进化为一种恐怖动物，与我们钟爱的鳍状肢动物，外貌上已大相径庭了。
When this inland sea retreated, Hamilton hypothesizes, the Amazon dolphins remained in the river basin, evolving into striking creatures that bear little resemblance to our beloved Flipper.
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