double corrector

例句：

1. 1. The double corrector is used to check the accuracy ofthe text before it is published.
   双重校正器用于在发布之前检查文本的准确性。
2. 2. Theengineer used a double corrector to ensurethat all calculations were accurate.
   工程师使用双重校正器确保所有计算都准确无误。
3. 3. Thedouble corrector was designed to catch errorsin the copy process.
   双重校正器被设计来捕捉复制过程中的错误。