更确切的说 翻译

More exactly,

这是一句插入语，应该用：or rather

例:
He arrived home late last night, or rather, early this morning. 他昨天深夜，更确切地说，今天一大早才回家。

or rather 的意思就是：More exactly; more accurately

又例：
He's my friend, or rather he was my friend.
他是我的朋友，不过更确切地说，他曾经是我的朋友

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More accurate saying

More accurate to say

More exactly,

Exactly speaking