单词：maintenance task
maintenance task的用法和样例：
例句
- Optimizer statistics are automatically refreshed using the automatic maintenance task infrastructure.优化器的统计信息是使用自动维护任务基础结构来进行刷新的。
- The costs of maintenance tasks are to be monitored for the individual areas of your system or operational structure.为系统各领域或操作结构监视维护任务成本时。
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