The answer to the problem caused a little trouble for my father,I imagine, but it was perfect in my opinion.

VOA: special.2010.01.30

But it's not the word perfect answer.

但这不是最完美的答案

耶鲁公开课 - 基础物理课程节选

I think I've heard bits and pieces of the answer everywhere, so I don't want to wait until we get it word-perfect.

我想我可以听到各种各样的答案,所以我不想等这大家想出完美的答案

耶鲁公开课 - 基础物理课程节选