retract
/rɪˈtrækt; rɪ`trækt/ v[I, Tn]
(fml 文)
1 withdraw (a statement, charge, etc) 撤回或撤消（声明、 指控等）
The accused refused to retract (his statement). 那被告拒不撤消（其供述）.
2 refuse to honour or keep (an agreement, etc) 拒绝执行或遵守（协议等）
retract a promise, an offer, etc 食言、 撤消提议.
3 move or pull (sth) back or in 缩回或拉回（某物）
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.