hard copy log

例句：

1. 1.The system requires a hard copy log for backup purposes.
   该系统需要硬拷贝日志用于备份目的。
2. 2.The data was copied onto a hard copy log before being sent to the server.
   数据被复制到硬拷贝日志上，然后再发送到服务器。
3. 3. The engineers used a hard copy log to track the progress of the project.
   工程师们使用硬拷贝日志来跟踪项目进度。