"他喜欢河马"用英语可以说成 "He pkes hippopotamuses."

"Hippopotamus"是一个英语单词，来自希腊语"hippopotamos"，意思是"马驹"或"河马"。

一些英文例句和中文翻译如下：

"Hippopotamuses are native to Africa." (河马原产于非洲。)
"The hippopotamus is a large, semi-aquatic mammal." (河马是一种体型庞大的半水生哺乳动物。)
"Hippopotamuses are known for their aggressive behavior." (河马以其攻击性的行为而闻名。)
"I saw a hippopotamus at the zoo yesterday." (昨天我在动物园看到了一头河马。)