He wrote the music but I don't know who wrote the words.

他创作了乐曲，但我不知道谁填写的歌词。

《牛津词典》

I no longer want to be friends with her but I don't know how to get the message across.

我再也不想和她做朋友了，但我不知道如何告诉她。

《柯林斯英汉双解大词典》

My cousin will drive me to school today, but I don't know when we'll leave.

我的表弟今天会开车送我去学校，但我不知道我们什么时候出发。

youdao

"It will have to be elevated at a higher level, but I don't know where."

VOA: standard.2009.12.17

I think you should take the lab sometime, but I don't know how many semesters that you have to take.

我觉得你们应该是不是地去做几次实验,我不太清楚你们要上多少个学期的课

耶鲁公开课 - 基础物理课程节选

People, but I don't know, at the same time, I think people are really interested in what they're doing.

那里的人......我不太清楚，不过同时，我觉得那里的人们都抱着浓厚的兴趣在做自己的事。

最喜欢的一门课 - SpeakingMax英语口语达人

But I don't know if the economic team has derived the number it would take.

WHITEHOUSE: Press Briefing

And you can do that, but I don't know at the cost of what.

CNN: Bailout has doubters at tavern near thriving car plant

Mr. FLANSBURGH: But I don't know if they really warm up to science that much.

NPR: Serenading Science In A New Rock Album