Fluorosilicate
氟硅酸盐
🗣️ 情景例句
But when do they do it?
但是什么时候动手术？
The frog in well knows nothing of the great ocean.
井底之蛙不知汪洋大海。
the graphic record shows three waves arriving one after the other at short intervals.
曲线纪录就能显示出前后相间的这3种地震波。