translation.en: But it is a particularly complicated challenge, because of all these books, as of today, we just know probably two percent: four books of more than 175.
translation.zh: 但这是一项异常复杂的挑战， 因为到目前为止在这么庞大的基因组信息中， 我们大概只了解2%： 175本书里的4本...