Celestobarite
锶重晶石
🗣️ 情景例句
I see. May I have your driver's license?
我明白了，请拿出你的驾驶执照好吗？
Nothing for nothing and very little for a half penny.
一分钱，一分货。
The wall behind looks a bit grey and dull. What can we do to make it look less ugly?
后面那堵墙看起来有点暗。我们能不能让它漂亮点？