Justin Bieber walked smack into the glass of an automatic revolving door when trying to leave a German hotel Justin has been a small hit in the glass door.

贾斯汀·比伯走进入自动旋转玻璃门时试图离开德国酒店，Justin已一头撞了过去玻璃门。

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In order to solve these problems, the improvement of the automatic revolving door method of control and safety inspection system and eventually reached a safe and stable revolving door operation mode.

为了改善这些成绩，改良自动旋转门的控制方式和平安检测系统，最终到达一个平安、波动的旋转门运转方式。

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