If he doesn't want to be involved, then so be it.

要是他不想参与，那就随他的便好了。

《牛津词典》

I also decided that if I said something stupid and other people laughed at me, then so be it.

我还决定，如果我说了一些愚蠢的话，别人嘲笑我，那就这样吧。

youdao

If in these activities the physical features of the planet are damaged, if the environment is made inhospitable for a multitude of living species, then so be it.

如果在这些活动中，这个行星的地理特征遭到破坏，环境不再适合大量物种居住，那么就随它去吧。

youdao

Then they collect the evidence and carefully document and transport it so that it can be further examined in a laboratory.

VOA: special.2010.05.05

If you, at the end of the semester, haven't agreed with me about this particular claim or that particular claim, so be it.

如果你在这个学期末，还是不对我这个特别的观点持赞同意见,那么顺其自然吧。

耶鲁公开课 - 死亡课程节选

Because it gets your imagination going. So yes, I would say absolutely as a student, it would be a place to visit.

因为它激发你的想象。所以是的，我认为对一个学生来说，这里绝对值得参观。

自然历史博物馆 - SpeakingMax英语口语达人

And if that leaves him with three times the disappointment late Saturday evening, so be it.

WSJ: Lukas seeks 3 times the fun in Preakness

The US wants a fresh start, but if one is not forthcoming, then so be it.

BBC: A summit of limited expectations

If shaving another 2mm off a fat pig took another four months, so be it.

FORBES: Apple Without Steve Jobs