translation.en: Because at the moment, they actually have no way genetically of telling the difference between a male and a female, which I found absolutely staggering, because they don't know what primers to look for.
translation.zh: 因为现在，他们没有方法在基因分析时 区分雌鲨和雄鲨 为此我觉得非常令人吃惊 因为他们不知道要分析的真正目的是什么