flyback retrace

例句：

1. 1.The team decided to fly back to the city after a long day of work.
   团队决定在工作了一整天后飞回城市。
2. 2.The pilot had to fly back to base after losing contact with the ground control.
   飞行员在与地面控制失去联系后不得不返回基地。
3. 3.The scientist flew back to his lab after completing his experiments.
   科学家在完成他的实验后飞回他的实验室。