retractability

v.缩回；收回；撤销

The undercarriage on light aircraft does not always retract in flight. 轻型飞机飞行时起落架不一定缩回。

I decided to retract what I had said before. 我决定收回前面说过的话。

Sir Alex has added his backing and believes Franco should retract his comments. 弗格森爵士支持自己的助理，并且强调里斯本竞技俱乐部主席应该收回自己的控诉。

The accused refused to retract his statement. 那被告拒不撤销其供述。