A writer has found a small deposit of manganese ore and rock specimens flecked with uranium or stained green by copper.
A writer has found a small deposit of manganese ore and rock specimens flecked with uranium or stained green by copper.
一名作家还发现了一个不大的锰矿堆积体和一些粘染有铀痕迹或者带着铜绿斑痕的矿石标本。