1、他留在凶器上的指纹 ● If the police take someone's fingerprints, they make that person press their fingers onto a pad covered with ink, and then onto paper, so that they know what that person's fingerprints look like. 提取…的指纹;让…按下指印
2、提交之纸张样本必须无手指印 、 污垢及皱纹, 并保存在清洁的塑胶袋内.