Level 5 · word 7,688 of 20,000
backbone
/ˈbækˌboʊn/
American
- n. 脊椎, 骨干, 支柱
- Definition
- n. the spine, or the most important supporting part of something
- Example
- Small businesses form the backbone of the local economy here.
- 小企业是本地经济的支柱。