1. Dactyloscopy is the practice of using fingerprints for identification.
指纹学是使用指纹进行身份识别的实践。

2. The police used dactyloscopy to match the fingerprint found at the crime scene to a suspect.
警方使用指纹学将在犯罪现场发现的指纹与嫌疑人进行匹配。