泰然自若的

例句：

1. 1. He walked into the room with a calm and composed expression.
   他带着平静和从容的表情走进房间。
2. 2. The old man sat there in silence, appearing to be in a state of serenity.
   老人坐在那里沉默不语，看起来处于一种宁静的状态。
3. 3. After the storm, the village was left in a tranquil and peaceful state.
   风暴过后，村庄恢复了平静和安宁的状态。