So a 12 year-old girl raises her hand and says, literally, "Apart from the fact that improper replication of the DNA molecule causes genetic disease, we've understood nothing else."
然后一个12岁的女孩举起手说， 原话是， “除了错误复制DNA分子会 导致遗传疾病这个事实之外， 我们什么也不懂。”