Y-block

例句：

1. 1. The Y-shaped block is used to connect two pieces of wood together.
   这个Y形块用来连接两块木头。
2. 2.The Y-shaped block was designed to make assembly easier.
   这个Y形块的设计是为了使组装更容易。
3. 3. The Y-shaped block is a useful tool for measuring and cutting curves.
   这个Y形块是一个有用的工具，用于测量和切割曲线。