So each company might have different reference databases, which helps explain why you might get different results from different companies.

所以每个公司可能有不同的参考数据库，这有助于解释为什么你可能从不同的公司得到不同的结果。

And finally, researchers compare them to reference databases and identify how many and which species are present— or if they've found entirely new ones.

最后，研究者们会将这些信息与参考数据库中的数据进行比较，辨识出有多少已知的存在物种，抑或发现了全新的物种。