noun 下载 🔗分享 河马,河马们 A large, semi-aquatic, herbivorous (plant-eating) African mammal (Hippopotamus amphibius) Examples : "While on safari, we saw several hippos relaxing in the river. " 在游猎时,我们看到好几只河马在河里悠闲地休息。 animal organism nature environment 与AI对话词汇游戏阅读练习