dì zhì xué jiā / jīng guò / duō nián / kān tàn / zhōng yú / tàn míng / le / zhè zuò / kuàng shān / de / què qiè / chǔ liàng

地质学家经过多年勘探，终于探明了这座矿山的确切储量。

After years of exploration, geologists finally ascertained the exact reserves of this mine.