proofing

• It is difficult to gather sufficient proof to win a conviction .
  要找到足够的定罪证据是很困难的。
• This will serve as a proof .
  以此为凭。
• Postmark serves as a proof .
  邮戳为凭。
• In his book he gave definitions and theorems but no proofs .
  在他的书中他给出定义和定理但无证明。
• It contains the cleverest proof in all of abstract reasoning .
  它包含着各种抽象理论中最精美的论证。
• Here is proof positive .
  有确实证据。
• The proof was based on the nonnegativeness of the strain energy .
  这种证明根据的是胁变能量的非负性。
• Proof of consistency by the method of models is an indirect process .
  用模型法证明相容性，是间接法。
• Angele was not the symbol, but the proof of immortality .
  安琪儿不是人的不朽性的象征，而是它的铁证。
• A fallacious proof was accepted as correct for a decade .
  一个虚假的论证曾被认为正确，为时达十年之久。