![Youcantellalotaboutpeoplebylookingattheirhair–notjustwh...]( "Youcantellalotaboutpeoplebylookingattheirhair–notjustwh...")
- 問題詳情：Youcantellalotaboutpeoplebylookingattheirhair–notjustwhethertheybrush,sprayorblow-dry.Scientistshavefoundawaytousehairtofigureoutwhereapersonisfromandwherethatpersonhasbeen.Thefindingcouldhelpsolvecrimes,amongotherusefulapplications.Waterisc...
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