片语
Not Behind Closed Doors并不闭门造车
Play behind closed doors禁止球迷入场
Work behind closed doors闭门造车
Failure behind closed doors闭门器失效了
Or Behind Closed Doors不关门
Pneumatic Behind Closed Doors气动闭门
Settle Behind Closed Doors私了
Duck Behind Closed Doors鸭子逃出房间
Piezoelectric behind the closed doors压电闭门