气态物质英语口语怎么说

"Gaseous substances" or "gases" are terms that can be used to refer to substances that are in the gaseous state. The gaseous state is one of the three common states of matter, along with the solid state and the liquid state. Gaseous substances are typically highly compressible and can easily expand to fill the volume of their container. Examples of gaseous substances include air, hydrogen, and methane. In everyday language, people might refer to these substances simply as "gases."