iron mine

例句：

1. 1. The iron mine is located in the northwest of China.
   这个铁矿位于中国西北部。
2. 2. The coal mine is a dangerous job that requires special training.
   煤矿工作是一项危险的职业，需要特殊培训。
3. 3. The iron mine has been closed due to environmental concerns.
   由于环境问题，这个铁矿已经关闭了。