noun 下载 🔗分享 木质部， 输送管。 A vascular tissue in land plants primarily responsible for the distribution of water and minerals taken up by the roots; also the primary component of wood. Examples : "The sturdy oak tree's xylem transports water from its roots up to its leaves. " 这棵健壮的橡树的木质部负责将水分从根部输送到树叶。 plant biology anatomy structure 与AI对话词汇游戏阅读练习
