这正是圣诞节我有一个好心情的缘故。

That's why I have this good feeling about Christmas.

youdao

参加体育运动能让我们有一个好心情和充沛的精力去工作和学习。

Playing sports can give us better mood and more energy to work and study.

youdao

你是否曾经历过这样的事情：本来有一个好心情，但是和某些人相处了一会儿就变得沮丧起来了呢？

Have you ever experienced having a good feeling, but after being with someone for some time you end up feeling bad?

youdao