noun 下载 🔗分享 乌龟,淡水龟。 Any of several small turtles, of the families Emydidae and Geoemydidae, that live in fresh or brackish water. Examples : "While walking along the riverbank, we spotted a terrapin sunning itself on a log. " 沿着河岸走的时候,我们看到一只乌龟正趴在木头上晒太阳。 animal nature biology 与AI对话词汇游戏阅读练习