noun 下载 🔗分享 扁形动物,扁虫。 Any of very many parasitic or free-living worms, of the phylum Platyhelminthes, having a flattened body with no skeleton or body cavity. Examples : "My science class is studying flatworms, simple creatures that live in water and sometimes inside other animals. " 我的科学课正在学习扁形虫,这些是结构简单的生物,生活在水里,有时也寄生在其他动物体内。 organism animal biology 与AI对话词汇游戏阅读练习