reversion
名词 reversion:
(law) an interest in an estate that reverts to the grantor (or his heirs) at the end of some period (e.g., the death of the grantee)
a return to a normal phenotype (usually resulting from a second mutation)
a reappearance of an earlier characteristic
turning in the opposite direction
同义词:reverse, reversal, turnabout, turnaround
returning to a former state
同义词:regression, regress, retrogression, retroversion
a failure to maintain a higher state
同义词:backsliding, lapse, lapsing, relapse, relapsing, reverting