toolholder bit

例句：

1. 1.The toolholder is a handy device for holding tools together.
   工具夹是一个方便的工具组合设备。
2. 2. The toolholder was designed to make it easy to organize and access tools.
   工具夹的设计是为了使工具的整理和访问变得容易。
3. 3. The toolholder is essential for anyone who needs to work with heavy machinery.
   对于需要使用重型机械的人来说，工具夹是必不可少的。