When you see a TV detective turn a doorknob using a handkerchief, she's probably destroying a latent print. The only way not to corrupt a latent print on a non-porous surface is to not touch it.
当你在电视剧集中看到一个侦探使用手帕打开一个门把手时，他可能正在毁坏潜在的指纹。
Latent: Left by the transfer of sweat and natural oils from the fingers onto a surface that is smooth enough to hold the print; not visible to the naked eye.
潜在的：手指表面的汗和油脂在一个平滑表面上留下的指纹，肉眼不可见。
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