事情进展顺利，或者说似乎是如此，但关系已经开始改变了。

Things were going well, ___or seemed to be, but the relationship had already begun to change.

她一定热爱她的工作，否则她不会坚持这么多年。

She must love her work ___or she wouldn't have kept at it all these years.

我从十二岁起就开始学习音乐，或者说，我大约十年前开始学习读谱和演奏乐器。

I have studied music since I was twelve ___or, in other words, I started to learn how to read music and how to play an instrument about ten years ago.