我们没有计算机备份，只得靠落后的纸档案重做记录。

We had no computer backup and had to rely on old paper files to reconstruct the records.

youdao

基本意思如下对于重做记录，在相应的事务被提交之前，也能被写入重做日志文件。

Redo records can also be written to a redo log file before the corresponding transaction is committed.

youdao

否则交易复苏（回滚）将是不可能的，因为重做需要撤消改变总是在同一重做的重做记录的变化本身。

Otherwise transaction recovery (rollback) would not be possible, because the redo needed to undo a change is always in the same redo record as the redo for the change itself.

youdao