This class at the same time is about rigorous fun.

本课程同时是一种严格的乐趣。

哈佛公开课 - 幸福课课程节选

If you forget that you're afraid, it's easy. And then it becomes fun.

如果你能忘记自己的害怕，那就简单了。学习语言就变成了一种乐趣。

生存英语 - SpeakingMax英语口语达人

And part of the pleasure for him is to do that transaction, to enliven the old East with the young West. These are all stereotypes of America, but Sal really believes them and really inhabits them.

他将这群人带到纽约，其中的乐趣在于一种“交换“,他想让新西部带动老西部，使其活跃，不过这些都是,对美国的刻板印象，但萨尔真的相信，这种印象占据他大脑。

耶鲁公开课 - 1945年后的美国小说课程节选