quiet take-off and landing

例句：

1. 1. The room is quiet and peaceful.
   房间很安静，很平和。
2. 2. He sat quietly in the corner.
   他静静地坐在角落里。
3. 3. The quiet of the forest was soothing to the soul.
   森林的宁静让人心灵得到安慰。