Noun:

1. the state of being cancelled or annulled

2. (law) a formal termination (of a relationship or a judicial proceeding etc)

3. the act of abrogating; an official or legal cancellation

invalidationn.无效；失效

cancellationn.取消；撤销；废除

terminationn.终止；结束；词尾；结果

withdrawaln.撤退；退回；取消

dissolutionn.破裂；瓦解；解体；解散；溶解

deletionn.删除

eliminationn.除去；消除；淘汰

repealv.废止；撤消n.废止；撤消

revocationn.废弃；取消

abrogationn.取消；废除

1. The limits of authority for approving the annulment of a reserve rank shall be the same as those for approving the conferment of the rank.
   批准取消预备役军官军衔的权限，与批准授予该级预备役军官军衔的权限相同。
2. Generally, annulment is easier if the marriage is unconsummated.
   一般来说，如果婚姻并不美满，宣告婚姻无效就比较容易。