What does slow motion of iphone6 camera mean?

Explanation of slow motion in time-lapse photography of iphone6 camera: Start the camera to shoot at a set time point, and then slow down an action after shooting. The operation steps are as follows:

1, first enter the main interface of iphone, and then find the camera tool.

2. Turn on the camera, slide your finger from left to right at the bottom of the screen twice, and we can enter the interface of time-lapse photography. See the circular clock icon at the top of the screen and click it.

3, you will see that there are 3 seconds and 10 seconds shutter countdown options, just select them.