水坝，水闸
及物动词：
在…上筑坝，堵住 词形变化
- 名称 dammer
- 时态 dammed，damming，dams
- obstruct with, or as if with, a dam
- a metric unit of length equal to ten meters
- female parent of an animal especially domestic livestock
- a barrier constructed to contain the flow of water or to keep out the sea