in miniature coal mine

• 小型煤矿

in miniature coal mine的用法和样例：

例句

1. More than 7,000 small coal mines were to close imminently, Li Yizhong, director of the State Administration of Work Safety, announced at a conference on work safety on Monday.
   国家工作安全管理部门主任李益中，在星期一的一次工作安全会议商说，有超过七千家的小型煤矿亟待关闭。
2. Moreover, in the regions surrounding Beijing, such as Shanxi and Hebei, small coal mines have been shut down for safety concerns, leading to some power tightness.
   而且，北京周边的地区如山西和河北，出于安全担忧而关闭了一些小型煤矿，这也导致电力紧张。