到目前为止尚未讨论的另一个服务，是存档和删除可能不再需要的旧实例的功能。
One additional service not discussed so far is the ability to archive and prune old instances that may no longer be required.
它包括添加和删除书签、检索用户书签列表和检索（或者重命名）用户标记的方法。
It includes methods to add and delete bookmarks, retrieve a user's bookmark list, and retrieve (or rename) a user's tags.
负责人表示，识别和删除仇视性言论的系统没有受益者。
The captain said its systems for identifying and removing hate speech have none benefactive.
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