identity deletion

例句：

1. 1.The company decided to delete all the old data from its servers.
   公司决定从服务器上删除所有旧数据。
2. 2. The identity deletion process is complex and requires careful handling.
   身份删除过程复杂，需要小心处理。
3. 3. After the deletion, the system was restored with new data.
   删除后，系统用新数据恢复了。