holding pattern airspace

例句：

1. 1. The pilot helda holding pattern while the weather was unfavorable.
   飞行员在天气不利时保持了航迹。
2. 2. The aircraft maintained a holdingpattern to avoid collision with other planes.
   飞机保持了航迹以避免与其他飞机相撞。
3. 3. During the hold pattern, the pilothad to remain alert and ready to takeaction at any moment.
   在保持航迹期间，飞行员必须时刻保持警惕，随时准备采取行动。