the part of a camera that opens temporarily to allow light to reach the film when a photograph is being taken

a wooden cover on the outside of a window that prevents light or heat from going into a room or heat from leaving it

Shutters usually come in pairs and are hung like doors on hinges. 窗戶遮板通常是成对的，像门一样挂在铰链上。

a metal covering that protects the windows and entrance of a shop from thieves when it is closed