proofer

例句：

1. 1. The proofer was responsible for verifying the accuracy of the documents.
   证明者负责验证文件的准确性。
2. 2. He is a well-known proofer in the field of finance.
   他在金融领域是一位知名的证明者。
3. 3. The proofer carefully checked each page to ensure that it was free from errors.
   证明者仔细检查了每一页，确保没有错误。