A low barrier across a river that controls water level and flow

• Used for measuring discharge, diverting water, or maintaining upstream depth

横跨河流的低坝，用于控制水位和流量

• 用于测流、分流或维持上游水深

A fence or maze set in water to guide or catch fish

• Often built from stakes, nets, or stone across a stream or tidal flat

设于水中的栅栏或鱼坝，用于引导或捕捉鱼类

• 常用木桩、网或石块在河道或潮间带修建

Seaweed; an archaic or dialectal term

• Chiefly Scottish and Irish usage

海藻；古旧或方言用法

• 多见于苏格兰和爱尔兰英语