Scientists have developed a technique to estimate the age of a suspect from blood left at a crime scene.

科学家近来研究出一项新的技术，通过嫌疑人在犯罪现场遗留的血迹推测其年龄。

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BLOOD left at a crime scene could be used to estimate the age of a perpetrator, thanks to a new DNA test.

感谢全新的DNA检测技术，遗留在犯罪现场的血液可以用于判断罪犯年龄。

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In September they published details of a technique to estimate the age of a suspect from blood left at a crime scene.

九月份他们发表了关于根据案发现场血迹估测嫌犯年龄的详细资料。

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For example, she discussed how investigators can learn a great deal from the shape of the blood drops found at a crime scene.

VOA: special.2010.05.05

When crime scene investigators arrive at the place of a crime, they first try to make sure the area is secure.

VOA: special.2010.05.05

Detectives identified him as a suspect based on evidence at a crime scene, the victim's descriptions and others.

NPR: Suspect In LA Girl's Abduction Captured In Mexico

That's worrying because a single print found at a crime scene can be enough to send someone to prison for life.

BBC: By Panorama reporter Shelley Jofre

The study paves the way for a forensic test that could estimate the hair colour of a suspect from DNA left at a crime scene.

BBC: Hair colour predicted from genes