ailerons

n.an airfoil that controls lateral motion

1. The pilot adjusted the ailerons to initiate a smooth turn to the left.
   飞行员调整副翼，以平稳地向左转弯。
2. Improper functioning of the ailerons can lead to loss of control during flight.
   副翼功能不正常可能导致飞行过程中失去控制。