a very large animal with short legs and thick , dark grey skin which lives near water in Africa
发音
例句
1. The children enjoyed watching the hippopotamus wallowing in the mud. 孩子们真喜观看河马在泥中打滚。 2. A hippopotamus surfs the waves off the coast of Gabon. 一头河马在加蓬的海岸附近冲浪。