Level 5 · word 5,915 of 20,000
mandatory
/ˈmændəˌtɔːri/
American
- adj. 强制性的, 必须的
- Definition
- adj. required by a law, rule or agreement
- Example
- Wearing a seatbelt is mandatory in most countries.
- 在大多数国家，系安全带是强制性的。