DNA表明，鲸鱼是河马的后代。
The DNA suggests that whales are descendants of the hippopotamus.
河马是非洲最危险的动物之一。
但是大家都知道他是一个河马。
她跟河马以及大象一起游泳。
他喜欢绵羊但不喜欢河马。
看这只河马，它喜欢吃草。
一只河马迅速地跑向鳄鱼并把它赶走了。
斑马和河马是其中之一。
也没有人留下来看海豹、长颈鹿或者河马。
And nobody stayed to see the seals, giraffes or hippos, either.
河马和犀牛正向你微笑。
英国政府越看越像是一条吞下河马的巨蟒。
The UK government looks increasingly like a python that has swallowed a hippopotamus.
河马看起来是这样的。
这些是河马的嘴巴。
河马想念他的朋友。
河马生活在水里。
河马想要帮忙。
狮子也有这样的问题吗？那么鲨鱼、河马也是吗？
保里洛说，河马有时会保护其他动物免受鳄鱼的伤害。
Paolillo says hippos sometimes protect other animals from crocodiles.
河马继续跑。
鲸鱼不是河马的后代，而是来自古老的类似狼的生物。
Whales are descended not from hippos but from that distant wolf-like creatures.
据报道，冒险水族馆是国内唯一拥有两匹河马的水族馆。
Reports say the Adventure Aquarium is the only one in the country that has two hippos.
动物园里有好多动物，比如狮子、长颈鹿、河马、和兔子。
There are so many animals in the zoo, such as lions, giraffes, hippos, and rabbits.
艾萨克·牛顿爵士比起河马的体型可小多了，但是我们并不会因此贬低他。
Sir Isaac Newton was very much smaller than a hippopotamus, but we do not on that account value him less.
我们沿着尼日尔河岸走着，寻找一头河马的足迹，它毁坏克莱姆村农场农作物。
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.
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。
Only two-and-a-half weeks old but already weighing in at 40kg (88b), a baby hippopotamus swims alongside her mother, Kathi.
大象、犀牛和河马都没有毛皮。他们都住在炎热的地方，在那里生活的诀窍就是保持凉爽。
Elephants, rhinos, and hippos don't have fur. They all live in hot places, where the trick is to keep cool.
我从来没有来过这样的动物园，在这里你可以抚摸长颈鹿、也可以很近距离观察大象和河马。
I have never been in a zoo where you could touch giraffes or get this close to elephants and hippos.
在较老的湖泊遗址，有河马、水牛的化石遗迹，这些动物一生中大部分时间都站在水里，还有牛的化石。
At older lake sites, there's fossil remains from hippopotamuses, water buffalo, animals that spend much of their lives standing in water, and also, fossils of cattle.
河马无法淹没在仅存的几个水坑里。
Hippos are unable to submerge in the few remaining water holes.
不幸的是，河马也不会唱歌。
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