unknow hero 為了人類有更好的生活，時常需要做動物實驗。人類犧牲動物的生命，換去更好的生活。他們是人類的無名英雄，默默的犧牲自己的生命。 In order to live better, animals often become experimental subject. And they will be born the subject for human, so they are the unknown hero.
