open-cast mining

• 露天采矿

open-cast mining的用法和样例：

例句

1. The machine pictured above is a bucket-wheel excavator used in modern surface mining.
   上面影像中的机器就是被用于现代露天采矿的一辆勺轮开凿机。
2. Moreover, open-cut mining had lead to serious losses of water and soil through desertification.
   而且，露天采矿更直接导致了水土的严重流失和土壤荒漠化。