An event can have no event type metadata associated with it - for example, this can be the case for events which are created by pre-existing non-SCA event sources.
事件可以没有事件类型元数据与之关联——比如，有可能出现这种情况：事件是由现有非sca事件源创建的。
In contrast, CLS-compliant compilers produce type metadata in an assembly.
反之，符合CLS的编译器则是在组件中产生型别中继资料。
Remember we discussed the Content-Type metadata associated with S3 objects and how it has to be set before the object is uploaded?
回忆一下，我们曾讨论过与S3对象相关联的Content -Type元数据，以及如何在上传对象前设置它。
Remember we discussed the Content-Type metadata associated with S3 objects and how it has to be set before the object is uploaded?
回忆一下，我们曾讨论过与S3对象相关联的Content -Type元数据，以及如何在上传对象前设置它。
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