translation.en: The reason we're not sure absolutely is because of the nature of evidence preservation in our judicial system, but that's another whole TEDx talk for later.  So at the actual trial, all six of the teenagers testified, and indicated the identifications they had made in the photo array.
translation.zh: 由于司法系统证据保存机制存在的问题 使得我们对于这些照片当时的情况 并不是百分百确定。 但这是另外一个 TEDx 演讲的内容了 在正式审判中 六个少年都做了证， 并指出他们在照片指认中指认出来的 是同一个人。