adjective 下载 🔗分享 水下的,海底的。 Existing, relating to, or made for use beneath the sea. Examples : "The scientist used an undersea camera to study the coral reefs. " 这位科学家用水下摄像机研究珊瑚礁。 ocean environment nautical geography biology 与AI对话词汇游戏阅读练习