Second, I need to change the Person code by adding a field and the appropriate property methods to track mood, as shown in Listing 4.

第二步，我需要更改person代码，添加一个字段和一些用于跟踪情绪的属性方法，如清单4所示。

youdao

Busy watching the recent NBA playoffs, I think this can change my mood.

最近繁忙观看NBA季后赛，我认为这可以改变我的心情。

youdao

For this world I am infinitesimal, however is strong to the oneself, can change an own mood to change an own attitude, can change an own activity.

对于这个世界我是渺小的，然而对于自己我是强大的，可以改变自己的心境，以改变自己的态度，可以改变自己的行动。

youdao

"There's some change in the mood." "I wouldn't say this is radical. Actually,automobile drivers have been a rather cohesive force in Russia, and this is not the first time this is happening.

VOA: standard.2010.05.19

' It's a change in the zeitgeist, in the mood, and the government is listening, I think -- it has to.

CNN: STORY HIGHLIGHTS