But he added that it will take some time to study the DNA material to come up with specific numbers.

但是他补充说，通过研究DNA材料统计出具体数字还需要一段时间。

And then they matched DNA material from that trash to DNA from a crime scene by using a database and a popular ancestry genealogy website.

之后，他们利用数据库和一个流行的祖先谱系网站，将垃圾中的DNA材料与犯罪现场的DNA进行了比对。