noun ダウンロード 🔗共有 繊毛虫類 Any of the many minute aquatic creatures, such as protozoa and unicellular algae, found in freshwater habitats. Examples : "Under a microscope, the pond water revealed a teeming world of infusoria, including tiny protozoa darting amongst the algae. " 顕微鏡下では、池の水は藻類の間を動き回る小さな原生動物を含む、繊毛虫類がうごめく世界を明らかにした。 organism microorganism biology environment nature animal science AIとチャット語彙ゲーム読解練習