Mostly they seem puzzled by the purpose of filter expressions and correlation predicates, by the various event delivery options, and by the way in which updates are driven in a monitoring context.

基本上，他们似乎是被筛选器表达式和关联谓词的用途、各种事件交付选项以及监视上下文中驱动更新的方式难住了。

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While you can use SNMP notification for alerting, monitoring uptime via polling ensures that any notification delivery failure will not obscure these events.

当使用SNMP通知发出警告时，通过轮询来监控运行时间可确保所有的通知发生故障不会影响这些事件。

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Responsibility for service delivery has been shifted from the village and township levels upward to the counties where personnel are better trained and monitoring systems are more readily implemented.

负责提供服务的部门从乡镇一级向上转移到了人员受到更好培训、监督系统更容易实施的县一级。

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It will explore mechanisms for setting benchmarks and targets, for overcoming obstacles that hinder development of early childhood care and education services and for monitoring progress towards service delivery.

UNESCO: Education