All right, that brings us to part number four, which is friends.

好了，这就引出了第四部分，朋友。

And finally, we have part number five, which is balance.

最后是我们的第五部分，平衡。

All right, part number two is revision and tip number four is that note-taking is broadly a waste of time.

好的，第二部分是复习，第四个技巧是记笔记基本上就是浪费时间。

Sounds like a leaky elbow pipe fitting, part number 5P440. I was about to go to bed, but I better go fix it.

听起来像是漏水的弯头管件，零件号 5P440。 我正要上床睡觉，但我最好去修理它。