1. Any of various hoofed mammals of the order Artiodactyla, which includes cattle, deer, camels, hippopotamuses, sheep, and goats, that have an even number of toes, usually two or sometimes four, on each foot.
偶蹄动物一种偶蹄目有蹄的哺乳动物，包括牛，鹿，骆驼，河马，绵羊和山羊，这些动物有偶数脚趾，通常每只脚有两个或有时四个
2. Any of various hoof ed mammals of the order Artiodactyla, which includes cattle, deer, camels, hippopotamuses, sheep, and goats, that have an even number of toes, usually two or sometimes four, on each foot.
偶蹄动物一种偶蹄目有蹄的哺乳动物，包括牛，鹿，骆驼，河马，绵羊和山羊，这些动物有偶数脚趾，通常每只脚有两个或有时四个
3. Hippopotamuses like to stand in the grass and eat most of the day.
河马喜欢站在草丛中，一天中的大部分时间它们都是在进食。
4. Part of Nechisar National Park Chamo is home to an abundance of wildlife including large numbers of hippopotamuses and Nile crocodiles.
查莫湖是Nechisar国家公园的一部分，也是大量野生物的家园，其中包括大量的河马和尼罗河鳄鱼。
5. Ancient Egypt is just one of many interesting things that include spies and hippopotamuses and Zoombinis and drawing and Dragonball Z and
古希腊只不过是众多有趣东西比如间谍、河马、蛋头宝宝、绘画和龙珠Z等等之中的一种
6. At Mzima Springs in Tsavo West National Park, rangers have been laying out hay for hippopotamuses to eat.
在西察沃国家公园的姆济玛温泉里，巡逻队员正在给河马喂干草。
7. Loango National Park got that nickname from the resident hippopotamuses'habit of swimming in the ocean and body-surfing to and from feeding grounds.
Loango国家公园给这绰号来自居住的河马河马习惯在海洋游泳，和身体冲浪和喂养的地面。
8. Their results showed convincingly that among living animals, whales are most closely related to the even-toed hoofed mammals, or artiodactyls, a group whose members include camels, hippopotamuses, pigs and ruminants such as cows.
他们的结果证明，在现生哺乳类中，鲸豚与偶蹄类最亲近；骆驼、河马、猪及牛羊等反刍动物都属于偶蹄类。
9. Hippopotamuses never wander far from the water's edge because their skins would soon dry out and crack if they were not kept moist.
犀牛从不远离水边，因为，如果它们的皮不能保持湿润，就会很快干裂。
10. Baby hippopotamuses are born on land.
小犀牛在陆地上出生。