我是挣着很多钱，但那不是问题的关键。

I was earning a lot of money, but that was not the issue.

《柯林斯英汉双解大词典》

但那不是问题的确切所在。

But that's not the problem, exactly.

youdao

但那不是问题，它仍然是个关于x和y的有效函数。

But, that's not the problem. It's still a valid function of x and y.

youdao

But it's possible,I suggested, that we really shouldn't focus on the question, what does it take for me to survive?

但我认为，很可能，那根本不是我们应该重视的问题，比起讨论我要存活下去需要什么条件？

耶鲁公开课 - 死亡课程节选

If we make--If we solve the problem of boredom setting in with progressive memory loss and radical personality changes, maybe boredom won't set in, but it's not anything that I especially want for myself.

如果用持续失忆,和剧烈人格变化来解决无聊的问题，也许不会产生无聊，但那不是我特别想做的事。

耶鲁公开课 - 死亡课程节选