自娱自乐

He´s like some dreamy kid playing on his own.

他就像是个自娱自乐的爱幻想的孩子。

I used to entertain at home quite a lot, and I can still whip up a fairly decent dinner party.

我原来经常在家自娱自乐，现在也还能迅速准备好一顿颇为像样的晚宴。

He plays violin just for enjoyment.

他拉小提琴只是为了自娱自乐。

I was referring to the numerous ways in which you entertain yourself.

我是说你竟然有那么多自娱自乐的方式。

Writing article often fun, little article shows that their own interests.

常以写文章自娱自乐， 文章稍微显示出自己的志趣。