free recoil

例句：

1. 1. The gun fired with a lot of free recoil.
   枪发射时产生了大量的自由后坐力。
2. 2. The pilot had to compensate for the free recoil of the aircraft.
   飞行员必须补偿飞机的自由后坐力。
3. 3.The projectile traveled at high speeds and experienced significant free recoil.
   弹头以高速飞行，并经历了显著的自由后坐力。