flat coal shovel

例句：

1. 1. The miners used flat coal shovels to dig the tunnel.
   矿工们使用平煤铲挖隧道。
2. 2.The flat coal shovel is a useful tool for mining operations.
   平煤铲是采矿作业中有用的工具。
3. 3.Flat coal shovels are commonly used in coal preparation plants.
   平煤铲在煤炭准备厂中被广泛使用。