1N-COUNT (照相机的)快门 The shutter in a camera is the part which opens to allow light through the lens when a photograph is taken. (照相机的)快门
There are a few things you should check before pressing the shutter release.
按下快门之前有几个地方要检查一下。
...a slow shutter speed.
缓慢的快门速度
2N-COUNT [usually plural]百叶窗Shutters are wooden or metal covers fitted on the outside of a window. They can be opened to let in the light, or closed to keep out the sun or the cold. 百叶窗
She opened the shutters and gazed out over village roofs.