wedge bit

例句：

1. 1. The wedges of the wedge bit are designedto fit together tightly.
   楔形钻头的楔形部分设计得可以紧密地配合在一起。
2. 2. The wedge bit was used tobore a hole in the wood.
   使用楔形钻头在木头上钻孔。
3. 3. The wedge bit is essential for removing stubborn stains from fabrics.
   楔形钻头对于去除织物上的顽固污渍至关重要。