Because knowledge seeks high literacy.

Field photos: photos taken by visiting exhibition venues and other places.

Positive film: Take a photo selected from cos.

Back to the picture: it is the picture you took but gave to others. To be clear, there are others besides yourself in this picture, and you are going to give it to him. Such a graph is called a back graph.

Trial assembly: try the cost equipment.

Quick report (preview): photos before the release of the feature film.

Supplementary pictures: to supplement the unsent pictures.

(The photos on the spot have no intention of metaphor, literally.

This is actually the same as making a movie. When a movie is made, there will be a preview to tell everyone what it is.

Then the film is released once, that is, the feature film appears.

For another example, some fans took some cosers and photos at the comic exhibition. When you get home, you can send a notice to these cosers on the Post Bar or Weibo, telling them that you can also have these pictures, which are called back pictures. I also bought something on Taobao. You took a photo of that thing and gave it to the owner, which is also called returning the picture.

Literally, this cooperation is not metaphorical.

The supplementary picture is not intended to explain, literally.

)