hook-shaped structure

例句：

1. 1.The hook-shaped structure of the ship is designed to catch fish.
   这艘船的钩状结构设计用来捕捉鱼。
2. 2.The hook-shaped structure on the wall is a unique feature of this museum.
   墙上的钩状结构是这个博物馆的一个独特特征。
3. 3.The hook-shaped structure on the roof is used to support the weight of the building.
   屋顶上的钩状结构是用来支撑建筑重量的。