This book tells the story: A closed door appears in front of you, and you turn the door handle gently. It’s really exciting and exciting, what’s behind the door. Is it a dirty broom closet or a vast hall. Is it a doctor's operating room or an astronaut's space station.
本书讲述了：一扇紧闭的门出现在眼前，轻轻转动门把手。真让人紧张又期待，门后面是什么呢。是肮脏的扫帚柜还是宽敞的大厅。是医生的手术室还是宇航员的空间站。
本书讲述了：一扇紧闭的门出现在眼前，轻轻转动门把手。真让人紧张又期待，门后面是什么呢。是肮脏的扫帚柜还是宽敞的大厅。是医生的手术室还是宇航员的空间站。
