儿童免疫是提供一系列提高儿童存活率的初级卫生保健干预措施的一个早期机会，其影响范围异常广大。
Childhood immunization is an early opportunity, with exceptionally good outreach, to deliver a range of primary health care interventions that improve child survival.
异常的官方定义，例如项目范围或项目团队成员中的变化。
An official definition of exceptions, such as changes in project scope or in the project team members.
务必记住，如果未指定缺省目标并且没有匹配选择条件的日期范围条目，则会引发异常。
Keep in mind that if you do not specify a default destination and no date range entry matches the selection criterion, then an exception will be thrown.
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