来自《犯罪现场调查 第13季 第9集 第9集》

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  singed onto their surfaces.
  烧痕也一摸一样
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  So what? Fired from the same gun, right?
  所以呢 同一把枪射出的子弹 对吗
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  Yes and no.
  说对一半
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  Heraclitus said,
  赫拉克利特[希腊哲学家]说过
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  "You never step into the same river twice"
  "人不能两次踏入同一条河流"
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  Well, truthfully, you never fire the same gun twice,
  其实 人也不能两次开同一把枪
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  because each time you fire a weapon,
  因为枪支在每次使用过后
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  you ever so slightly alter its characteristics.
  都会发生些细微的变化
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  Heraclitus, huh?
  赫拉克利特是吧
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  - Go on. - All right.
  -接着说吧 -好的
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  Polymer trace got me thinking.
  聚合物残留让我想到
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  Maybe we're looking for a plastic gun.
  我们要找的也许是把塑料枪