fixed control area

例句：

1. 1. The fixed control area is thedesignated area where all flights are controlled.
   固定控制区域是所有航班都受控的指定区域。
2. 2. The fixed control area is crucialfor maintaining air traffic safety.
   固定控制区域对于维护航空交通安全至关重要。
3. 3. The fixedcontrol area is designed toprevent accidents caused by human error.
   固定控制区域旨在防止由人为错误引起的事故。