Even large files can take only seconds to upload if they already exist somewhere on one of these firms' disks.

即使是更大的文件，只要它们已经存在于这些公司其中一个磁盘上的某个位置，上传也只需要几秒钟的时间。

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OAGi has done this by crafting standards where necessary and by recommending standards where they already exist.

OAGi已经通过为需要标准的领域草拟标准以及为已经存在标准的领域推荐标准完成了这项工作。

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The next section of code determines if the user is new or not, and either selects the user's ID from the database if they already exist, or adds it to the database if they do not.

下面一段代码确定用户是否为新用户，如果用户ID已存在，那么从数据库中选择用户ID，否则，将用户ID添加到数据库。

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But the Special Advocates, the security-vetted lawyers asked to act in secret cases where they already exist, don't know the full list because the Home Secretary won't tell them what it is.

BBC: Are secret courts one step closer?

The World Conference on Human Rights reiterates the need to consider the possibility of establishing regional and subregional arrangements for the promotion and protection of human rights where they do not already exist.

UNESCO: Vienna Declaration and Programme of Action

Why can't we just make do with the stem cell lines that already exist, they ask?

BBC: Embryonic stem cells can be turned into any kind of cell