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;
例句:
Let's forget about it, it's all water over the dam.
忘了那件事吧, 这已经无法挽回了.
The Aswan Dam helps to control the River Nile in Egypt.
阿斯旺水坝有助于控制埃及的尼罗河.
The dam cuts the river in the middle.
大坝把河水拦腰截断.