approximately duplicate database records 相似重复记录
detecting approximately duplicate database records 重复记录识别
duplicate database
复制数据库
以上为机器翻译结果，长、整句建议使用 人工翻译 。
E: Extract DDL file needed to duplicate database.
e：提取复制数据库所需的DDL文件。
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"This has made things more difficult but there were duplicate passports and widespread abuse of the system even when the national equine database was around, " he said.
BBC: Science & Environment
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