n. a barrier constructed to contain the flow of water or to keep out the sea
n. female parent of an animal especially domestic livestock
v. obstruct with, or as if with, a dam
n. 水坝, 障碍
v. 控制, 筑坝
[计] 直接存取法
1. The dam holds back a large amount of water.
水坝挡住了大量的水。
2. They built a new dam to provide electricity for the city.
他们建了一个新水坝来为城市提供电力。
3. The dam created a beautiful lake for fishing and boating.
水坝形成了一个美丽的湖泊，供钓鱼和划船使用。