大部分数据在大量系统中进行复制，并且在质量、格式及含义上出现重大变更。

Most data is duplicated across a number of systems, with significant variations in quality, format, and meaning.

youdao

大部分数据在大量系统中进行复制，并且在质量、格式及含义上出现重大变更。

Most data is duplicated across a number of systems, with significant variations in quality, format, and meaning.

youdao