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每当罪犯犯罪,总会留下证据。有时,罪犯也许足够谨慎,避免在现场留下指纹或头发及其它形式的踪影证据。然而,尽管罪犯再缜密再仔细,
Whenever a criminal commits a crime, he always leaves evidence. Occasionally, criminals may be cautious enough to avoid leaving fingerprints or hair and other forms of trace evidence on the scene. However, despite the careful and careful examination of offenders,