海闸 sea lock

上海大闸蟹 shanghai hairy crab

上海闸北区 Zhabei District

楔形通海闸阀 wedge gate flooding valve

通海闸门 sea gate

通海船闸 sea lock

滴水湖出海闸 the gate of dishui lake

闸坡富海酒店 fuhai hotel

排海闸门 discharging gate

海神闸门 Neptune's Staircase