It could be fun to watch them.

看他们会是乐趣。

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"This ought to be fun," he told Alex, eyes gleaming.

“这应该会有趣。”　他对亚历克斯说着，两眼闪着光。

《柯林斯英汉双解大词典》

While it will be fun, the seminar also promises to be most instructive.

这次专题讨论会将会很有趣，也一定会非常有启发性。

《柯林斯英汉双解大词典》

Their job might be fun, or they like their employer and the other people at work.

VOA: special.2009.10.18

Maybe that's miniscule, but maybe it's going to be fun for you, especially if you have a sort of theatrical bent, or if you like getting up in front of people, or if you're just really, really passionate about a novel that you want everyone to read.

这可能不值一提，但可能对你们来说很有意思，尤其如果你喜欢戏剧，或者喜欢在人们面前表现，或者你只是对这部小说很有热情,希望大家都来读。

耶鲁公开课 - 1945年后的美国小说课程节选

Would you like to come? It could be fun.

你想一起吗？肯定会很有意思的。

I'm going实战 - SpeakingMax英语口语达人

This will be fun for local kids or anyone who can't afford a ticket.

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For those too young to remember, flying used to be fun and, at times, downright glamorous.

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The racing modes are cool, the graphics are lovely and it can be fun to play.

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