dam读音：英读音[dæm]；美读音[dæm]。
基本解释：
n. 水坝，堰；水库；（牙科用的）橡皮障；〈比喻〉障碍。
vt. 用水坝阻止；阻塞，抑制。
dam用法和例句提示：
1.Outside experts studied the dam and ordered small changes.
外国专家对大坝研究之后吩咐某些方面要稍加改动。
2.Unfortunately,an earthquake might liquefy the core of the dam.
不幸的是，一次地震就可能将水坝的关键之处毁于一旦。
3.Green dam has the potential to tighten this.
绿坝有可能加强这类监管。
4.But admirers of the dam are not yet declaring victory.
不过那些对三峡大坝赞赏有加的人还未宣布胜利。
5.He didn't know whether it was done for the zipingpu dam.
他不知道紫坪埔大坝是否经过了这样的评估。
双语例句：
1.Building a dam here could have unforeseeable consequences for the environment.
在这里修建水坝可能会对环境造成无法预料的后果。
2.A huge dam has been built on the Yangtze River.
长江上建起了一个大型水坝。
3.They were afraid the dam wouldn't hold.
他们担心大坝会溃堤。
4.Plans for the dam have been vetoed by the Environmental Protection Agency.
修建大坝的计划已被环境保护局否决。
5.The dam had been breached.
大坝决口了。
6.These dams have restricted the flow of the river downstream.
这些堤坝限制了河水顺流而下。
7.The dam will stand 600 feet high
大坝将高达600英尺。
8.More than 70 people were killed in the floods,caused when a dam burst
大坝决口造成洪灾，70多人因此丧生。
9.Large dams have harmed Siberia's delicate ecological balance.
大型水坝对西伯利亚脆弱的生态平衡造成了破坏。
10.There are clear winners when a dam is built.Farmers get irrigation water,businesses get electricity
大坝若是建成，会有一些明显的受益者；农民将得到灌溉用水，企业将得到电力。