the act of reducing or reversing (= changing to what it was before) the effect of a particular arrangement

They do not want to see any rollback of this agreement. 他们不想见到协议（条款）有任何改变。

They appear to be agitating for a roll-back of democracy. 他们大声疾呼要求民主改革逆转。

There has never been a rollback to a previous version. 从来都没有回滚到之前的版本过。

used to describe something, or part of something, that moves back by turning over and over

There's a rollback cover on the console. 控制台上有一个回滚盖。

The car had front-wheel drive, a surprisingly roomy interior, and a roll-back canvas roof. 这辆车有前轮驱动，内部空间出奇的宽敞，还有一个可折叠的帆布车顶。

used to describe something that reduces or reverses (= changes to what it was before) the effect of a particular arrangement

It'd be nice if this feature included a rollback option of some kind. 如果这（装置/模块/程序）包含有某种回滚选项就太好了。

The demand pushed union leaders into an even more aggressive negotiating posture, believing they were faced with a rollback measure that was intended to crush the union. （市场）需求迫使工会领导采用更为激进的谈判姿态，（鉴于工会）认定他们面临着旨在打垮工会的压价手段。