名詞 coal mine:

1. a mine where coal is dug from the ground
   同義詞：coalpit

1. A four-wheeled, open, box-shaped wagon or iron car run on tracks in a coal mine.
   礦車、煤車煤礦中在軌道上行駛的四輪、開(kāi)口、盒狀的運(yùn)貨車或鐵制車廂
2. That coal mine is no longer worked.
   那個(gè)煤礦已經(jīng)不經(jīng)營(yíng)了。
3. They are ventilating the sap of a coal mine.
   他們正在使煤礦坑道通風(fēng)。