A hinged fixture, such as a metal ring or bar, used for knocking on a door.
A hinged fixture, such as a metal ring or bar, used for knocking on a door.
门环供敲门用的有铰链的固定物，比如金属环或杆，
A hinged fixture, such as a metal ring or bar, used for knocking on a door.
门环供敲门用的有铰链的固定物，比如金属环或杆，