The conventional methods are meant to bring out fingerprint patterns with regular light and they have to treat those with powder, which alters them.
传统的方法是通过常规光线使指纹显示出来，而且要借助粉末等物质，这会改变指纹保存状况。
"The conventional methods are meant to bring out fingerprint patterns with regular light and they have to treat those with powder, which alters them," Worley said.
沃尔利说：“传统的方法是通过常规光线使指纹显示出来，而且要借助粉末等物质，这会改变指纹保存状况。”
"The conventional methods are meant to bring out fingerprint patterns with regular light and they have to treat those with powder, which alters them," Worley said.
Worley说，传统的方法是利用规则光来显示指纹图案，但是那样必须用粉末来处理，而这会改变指纹。
"The conventional methods are meant to bring out fingerprint patterns with regular light and they have to treat those with powder, which alters them," Worley said.
Worley说，传统的方法是利用规则光来显示指纹图案，但是那样必须用粉末来处理，而这会改变指纹。
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