birkremite

例句：

1. 1. The birkremite mine is a significant source of natural gas.
   这个岩盐矿是天然气的一个重要来源。
2. 2.The birkremite mine has been in operation for over a century.
   这个岩盐矿已经运营了超过一个世纪。
3. 3.The birkremite mine is located in the northern part of the country, near the border with Russia.
   这个岩盐矿位于该国北部，靠近与俄罗斯的边界。