Though Pan's time spent learning about frogs means that he had no problems finding frogs to photograph, he set himself quite a task with his ambition to capture every stage of their life history, from egg to reproducing adult, on film.
雖然找蛙不再困難，但潘智敏希望能拍攝到每一種青蛙完整的生活史，從卵胚胎到成蛙，為此他也吃盡苦頭。