Cassinite
钡正长石
🗣️ 情景例句
I ventured to correct the teacher's mistake.
我鼓起勇气去纠正老师的错误。
Knowledge is power.
知识就是力量。
Sparks were emitted from small black boxes and red lamps flashed on and off angrily.
小黑盒子里迸出火花，红色灯泡发怒似地忽明忽暗。