noun 下载 🔗分享 蛔虫,线虫 An invertebrate animal of the phylum Nematoda and other similar phyla. Many species of roundworms are parasites. Examples : "My dog was scratching a lot, so the vet checked a sample and found roundworm parasites. " 我家狗狗一直在挠痒痒,兽医检查了样本,发现有线虫寄生。 animal biology organism medicine disease 与AI对话词汇游戏阅读练习