有些儿童乐此不疲，废寝忘食，不但耽误学习，且危害健康。

Some children happy, sleep or not only delay, learning, and a health hazard.

在人行道上画粉笔画，伊娃乐此不疲。她拥抱着她的小粉丝。

She helped with chalk drawings on the pavement outside the store and gave out a few hugs to her little fans.

在他的小动物的陪伴下，他在那里创造了奇迹，而且似乎乐此不疲。

In the company of his creatures, he did wonders there and was never tired of doing them, it seemed.

尽管如此，我们还是乐此不疲地根据我们对他们的了解来猜测他们的举动和反应。

However, we like to make guesses about their actions and reactions based on our knowledge of them.

面对印度乐此不疲的反对活动，印度人民党说国大党显出了所有“无头苍蝇”领导素质的基本特征。

The gleeful opposition, the Bharatiya Janata party, says the Congress party is showing all the leadership qualities of a "headless chicken".