corer concrete cutter

例句：

1. 1. The workers were corering the rock to make a hole for the pipe.
   工人们正在凿岩石为管道打洞。
2. 2. The carpenter was drilling holes in the wood to reinforce it.
   木匠在木头上钻洞以加固它。
3. 3. The farmer used a corer to dig a deep well for water.
   农民用凿子挖了一个深井来取水。