projected mine

例句：

1. 1. The engineer was taskedwith designing a new projected mine.
   工程师被指派负责设计一个新的投射矿。
2. 2. Themining company has been exploring for potential projected mines in the area.
   矿业公司一直在该地区寻找潜在的投射矿。
3. 3. The discovery ofthis projected mine could revolutionize theway we extract minerals.
   发现这种投射矿可能会彻底改变我们提取矿物的方式。