scarce coal resources

• 稀缺煤种

scarce coal resources的用法和样例：

例句

1. Article 28 The State shall ensure protective mining for the special or rare types of coal which are of important value to the national economy.
   第二十八条对国民经济具有重要价值的特殊煤种或者稀缺煤种，国家实行保护性开采。