Hi, Xiao Ming, look at my new digital camera. This button is the switch.

If you press it, it will work. And from the screen you can see the pictures that

you want to take.You didn't need a film to take photos. And if you want to

see the pictures, you should press this button. The pictures will be showed

on the screen. You can delete some bad ones. You can also connect the

camera to the computer and save some good pictures.

(答案不唯一)