noun 下载 🔗分享 茅草, 狗牙根 Couch grass (Elymus repens; a species of grass, often considered as a weed) Examples : "The dog was chasing a twitch in the backyard. " 狗在后院追逐一片茅草。 plant agriculture biology nature 与AI对话词汇游戏阅读练习