noun 下载 🔗分享 公亩 An accepted (but deprecated and rarely used) SI unit of area equal to 100 square metres, or a former unit of approximately the same extent. Symbol: a. Examples : "The old blueprints for the house used the are as a unit of measurement. " 这栋房子的旧蓝图使用公亩作为面积单位。 area unit 与AI对话词汇游戏阅读练习