礦, 礦井

a pit or excavation in the earth from which metallic ores, coal, or other mineral substances are taken

範例:

• The coal mine was closed due to safety concerns. 煤礦因安全問題被關閉。 • They discovered a new gold mine in the mountains. 他們在山裡發現了一個新的金礦。 同義詞:

pit excavation diggings quarry shaft