为什么不第三次再试一试呢？

Why not try the third time?

youdao

If you're unsure about that, check out, of course, chapter three in the textbook, where these issues are addressed.

当然,如果还不确定,可以看看课本的第三章,这些问题都提到了

耶鲁公开课 - 聆听音乐课程节选

Often, for a particular state change, it is easy to calculate two of these, but not the third.

对于一些特定的状态变化，它们中的两个很好计算，但是第三个往往不容易计算。

麻省理工公开课 - 热力学与动力学课程节选

I didn't get it. Somebody else will say, can you do number three on the homework for me?

我不懂，还有人会说，你能为我解答家庭作业的第三题吗？

麻省理工公开课 - 固态化学导论课程节选