Ouachitite
黑云沸煌岩
🗣️ 情景例句
He never drinks except on special occasions.
除非在特别场合，他从不喝酒。
To research the graph
研究曲线图
If explosives are used, vibrations will cause the roof of the mine to collapse.
如果用炸药爆破，震动会引起矿顶塌落。