“在上文”常见的英文表达有 “in the preceding/above text/passage” 或 “as mentioned above”(如果侧重于提及之前的内容),具体使用可根据语境调整:
In the preceding/above text/passage, we discussed the causes of climate change.(在上文中,我们讨论了气候变化的原因。)
As mentioned above, the project deadline has been extended.(如上文所述,项目截止日期已延长。)