Level 6 · word 13,327 of 20,000
usefulness
/ˈjuːsfəlnəs/
American
- n. 实用性, 有用
- Definition
- n. the quality of being useful or helpful
- Example
- The tool proved its usefulness during the emergency repair.
- 这个工具在紧急维修中证明了它的实用性。
Word familyuse-