expand
verb [ I or T ] uk/?k?sp?nd/ us/?k?sp?nd/
B2 （使）（尺寸、数量或重要性）扩大，增加；（使）膨胀
to increase in size, number, or importance, or to make something increase in this way
The air in the balloon expands when heated. 气球里的空气加热后膨胀。
They expanded their retail operations during the 1980s. 20世纪80年代他们扩大了零售业务。
- More examples
- I don't think we should expand our business in the current economic climate.
- In their second album, the band tried to expand their stylistic range.
- The college is not able to expand because of restrictive planning laws.
- Their economy has expanded enormously, while ours, by contrast, has declined.
- In their efforts to reduce crime the government expanded the police force.
Phrasal verb
expand on something 对…详述；进一步说明
to give more details about something you have said or written
She mentioned a few ideas, but she didn't expand on them. 她提到了几个想法，但并没有进行详细说明。