hippopotamus

Still, now we knew for sure where whales came from and that the hippopotamus theory wasn't complete science fiction..虽然，我们现在已肯定知道鲸来自何处，但是我们也清楚了，河马之说还不够完整。

Only two-and-a-half weeks old but already weighing in at 40kg (88lb) a baby hippopotamus swims alongside her mother, Kathi..这只有两周半大却重达40公斤（88磅）的河马宝宝正游曳在妈妈凯瑟琳旁边。

We were walking along the bank of the Niger river, searching for the tracks of a hippopotamus that was ravaging the corn on Karim's farm..当时，我们正走在尼日尔的河岸上，寻找着毁坏克莱姆村农场农作物的罪魁祸手河马的踪迹。