基本解释n.水坝名词dam的复数形式.abbr.防御性反导弹系统(=Defense Against Missiles Systems)同根派生 英汉例句用作名词 (n.)There are several dams across the Nile.有好几个水坝越过尼罗河。Dams need better maintenance and desilting.水坝需要更好的维护和疏通。