rectifying characteristic function

例句：

1. 1.The engineer rectified the faultymachine.
   工程师修理了有故障的机器。
2. 2. Theteacher rectified the students' mistakesin the test.
   老师在考试中纠正了学生们的错误。
3. 3. The company rectifiedthe product quality issues and improved its reputation.
   公司纠正了产品质量问题，并提高了声誉。