solid

/ˈsɑləd/

matter that is solid at room temperature and pressure

中文释义：固体物质

Water freezes into a solid at zero degrees Celsius.

水在零摄氏度时冻结成固体。

The planet's core is believed to be a solid ball of iron and nickel.

这颗行星的核心被认为是一个由铁和镍组成的固体球。