v. 缩回, 收回, 取消, 撤消
vt. 缩回；缩进；取消vi. 缩回；缩进；撤消n. 收缩核
过去式:retracted 过去分词:retracted 现在分词:retracting 第三人称单数:retracts
retract 撤消，撤回，缩回
re-,向后，往回，-tract,拉，词源同 draw,tractor.
1、retract a confession [法] 翻供
2、retract bolt [化] 伸缩螺栓
3、neighborhood retract 邻域收缩核
4、retract stroke 回缩行程
5、reel off retract line 拨禾轮收回线
6、foreskin does not retract 包皮不回缩