我刚删除了的一条内容，删除后仍若隐若现，令我有些困惑。
Discussion
我现在看不到了，可能是因为 Relays 相互广播删除需要一些时间。
NIP-09: Relays SHOULD continue to publish/share the deletion events indefinitely, as clients may already have the event that's intended to be deleted. Additionally, clients SHOULD broadcast deletion events to other relays which don't have it.
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