three stages of ore reserves

例句：

1. 1. The company has identifiedthree stages of ore reserves thatneed to be developed.
   该公司已经确定了需要开发的矿石储量的三个阶段。
2. 2. The explorationteam has discovered three stages of orereserves in the region.
   勘探队在该地区发现了三个阶段的矿石储量。
3. 3. The governmentis working on a plan to develop threestages of ore reserves for sustainablegrowth.
   政府正在制定一个计划，以开发三个阶段的矿石储量来实现可持续发展。