Since we worked together for 5 years, could you give me a reference?
鉴于我们一起工作五年，你可不可以给我写份推荐信。
The prescriptions must be kept for two years for reference.
处方应当留存两年备查。
The reference service is a library core business work in recent years.
参考咨询是图书馆的一项核心业务工作，是图书馆服务功能的重要体现。
The reference service is a library core business work in recent years.
参考咨询是图书馆的一项核心业务工作，是图书馆服务功能的重要体现。
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