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 : "The biology class dissected a flatworm to study its simple anatomy. " 生物课上,学生们解剖了一种扁虫,以此来研究它简单的身体结构。 organism animal biology 与AI对话词汇游戏阅读练习