Calclacite
醋酸氯钙石
🗣️ 情景例句
You'll be glad to hear that Bill is alive and kicking.
比尔现在精神饱满，你听了一定很高兴。
Suggestions on packing are greatly appreciated.
我们非常欢迎大家对包装方面提出建议。
It sped downhill at the end of the race and its driver had a lot of trouble trying to stop it.
它在接近终点时，冲下了山坡，驾驶员费了好大劲才把车停下来。