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