固体在一定温度下转变成液体。
Milk solids include salts, protein and sugar.牛乳中的固态物质包括盐分、蛋白质和糖。
Generally speaking, ceramics are what you get when you apply heat to certain inorganic, non-metallic solids and then allow them to cool.一般来说,陶瓷就是你加热某些无机的、非金属的固体然后让它们冷却得到的东西。