自若

例句：

1. 1. He is very at ease in his own company.
   他在自己身边非常自在。
2. 2. She handled the situation with great self-assurance.
   她处理这种情况非常自信。
3. 3. The old man lived a life of great self-reliance.
   这位老人过着一种非常独立的生活。