1. rollback
2. reversion
3. reversal
4. reverse
Relative explainations:
sex reversal
性反轉
To reverse direction.
反轉方向
To turn around to the opposite direction.
反轉轉向相反方向
complete reversal of direction of travel.
前進的完全反方向的反轉。
The American market turned roundsharply a week ago.
美國證券市場於壹周前急遽反轉。
A disadvantage of the turbine is that it is not reversible.
渦輪機的壹個缺點就是它不可以反轉。
not reversible or capable of having either side out.
不可反轉或不能每邊都外穿。