The doll's clothes fell into a locked path downstairs and could not be retrieved for the time being. What should I do?

You can ask the property if there is a key to open the door. If not, you can also consult the property.

The structure of each lock is different, which determines its different functions. As for the unlocking principle, the unlocking principle of most locks is the same, except for some locks such as magnetic card locks and electronic locks.

Although they are different in style, structure and size, the unlocking principle is exactly the same. As the saying goes, the unlocking principle of these locks is exactly the same, mainly because their lock centers are round objects. Anyone who has studied physics knows that only circular objects can rotate freely. Squares and planes are objects that cannot be rotated at will.