And the kids that you see here all volunteered to be part of this, 28 of them, and you can see as soon as the picture comes up that they are in fact a remarkable group of young people all afflicted by this disease, all looking quite similar to each other.
你在这看到的这些小孩， 都是参与研究的志愿者 28个孩子， 从照片上你们能看出来 事实上他们是一群非常优秀的年轻人， 但都被这一疾病侵袭。 每个人看起来都很相像。