Steinheilite
堇青石
🗣️ 情景例句
No parking.
禁止停车。
What's your favorite food?
你最喜欢的食物是什么？
and the search for oil has done more to improve deep drilling than any other mining activity.
寻找石油比其他任何采矿业对改进深孔钻探作的贡献都要大。