什么是 substance？
什么是 substance？
- That which has mass and occupies space; matter.
- A material of a particular kind or constitution.
- Essential nature; essence.
- Gist; heart.
- That which is solid and practical in character, quality, or importance: a plan without substance.
- Density; body: Air has little substance.
- Material possessions; goods; wealth: a person of substance.