时间机器每次备份都会和前一次的备份文件做比较。

Time Machine compares all later backups to the first one.

youdao

她有个出自前一次婚姻的十几岁的女儿。

She has a teenage daughter from a previous marriage.

《柯林斯英汉双解大词典》

这是自从14年前双方爆发战争以来的第一次会晤。

The meeting is the first ever between the two sides since the war there began 14 years ago.

《柯林斯英汉双解大词典》

So all of these assumptions are the same assumptions we studied two weeks ago, or two and a half weeks ago, and which you actually studied in your first homework assignment.

所有的这些假设都与,我们两周或两周半前学过的假设一样,也与第一次家庭作业中的假设一样

耶鲁公开课 - 博弈论课程节选