clear operation

• 清除操作

clear operation的用法和样例：

例句

1. During a cleaning operation unneeded drivers will be deleted from the system.
   在清除操作期间不需要的驱动从系统将被删除。
2. Using this method gives the target program a chance to prompt the user to save any unsaved data during the cleanup operation.
   使用该方法使目标程序有机会在清除操作中提示用户保存任何没有保存的数据。