proof before letters

例句：

1. 1.The scientist needed to provide a detailed proofof the experiment's success.
   科学家需要提供实验成功的详细证据。
2. 2. Thelawyer presented several pieces ofproof to support his argument.
   律师出示了几份证据来支持他的论点。
3. 3. The police collected various proofs tosolve the case.
   警方收集了各种证据来解决这个案件。