noun 下载 🔗分享 草履虫 An oval-shaped protozoan organism of the genus Paramecium. Examples : "The pond water contained many tiny paramecia, visible only under a microscope. " 池塘水里含有许多微小的草履虫,只有在显微镜下才能看到。 organism biology microorganism animal 与AI对话词汇游戏阅读练习