节讨论了一个令人迷惑的领域，即XML空白处理。

Section 4.16 addresses the very confusing area of XML white space handling.

youdao

基于4.1节中对业务规则和设计的调优，你得到了一个用POJO来表示的领域对象的类图。

Based on the tuning of business rules and design in Section 4.1 you come up with a class diagram for your domain objects represented by the POJO. Our recommendations are.

youdao

我年轻的时候曾经涉足绘画领域，但最近一次作画是在2010年的耶诞节。

I dabbled in painting in my youth, but the last time I painted was Christmas of 2010.

youdao

I went into the positive psychology, into the field of psychology, as I mentioned in the first lecture, because I was unhappy here.

我之所以研究积极心理学，探索心理学领域，正如我第一节课时提到的，是因为我不快乐。

哈佛公开课 - 幸福课课程节选