在上世纪初,由于感光材料的原因,拍一张照片需要一秒至五六秒的时间。照相馆的摄影师为了拍出清晰的像片,就和被摄者约好,当用板子拍桌子的时候,即为拍照开始,被摄者就不要动了。所以当时的照相馆里,时常可以听到 In the early part of the last century, taking a photo took one second to fifty-six seconds for photographic materials. Photo studio photographer in order to take a clear picture, and the photographer made an appointment, when the table with a plate when the camera is the beginning, the photographer will not move. So at the time of the photo studio, you can often hear