mental maturity

例句：

1. 1.The ability to manage stress is a key indicator of mental maturity.
   能够管理压力的能力是心理成熟的关键指标。
2. 2. As she grew older, her mental maturity improved dramatically.
   随着年龄的增长，她的心智成熟度显著提高。
3. 3.Mental maturity is essential for success in both personal and professional life.
   在个人和职业生涯中，心理成熟是成功的关键。