仪器飞行

例句：

1. 1. The aircraft was performing an instrument flight in the sky.
   飞机正在天空中进行仪器飞行。
2. 2. The pilot had to perform an instrument flight due to bad weather conditions.
   由于恶劣的天气条件，飞行员不得不进行仪器飞行。
3. 3. The engineers were conducting an instrument flight to inspect the equipment.
   工程师们正在进行仪器飞行以检查设备。