It's an interesting scientific phenomenon, but of no practical use whatever.

这是一种有趣的科学现象，但没有什么实际用途。

《柯林斯英汉双解大词典》

Of course Peter should have kept quiet, but of course he did not.

彼得当然应该保持沉默，但他当然没有。

youdao

So, as I said, not sure of numbers but of course we won't go over the maximum of 100.

所以，就像我说的，我们不确定具体的人数，但肯定不会超过一百人的上限。

youdao

Today,Mars continues to excite -- not as the object of science fiction but of scientific study.

VOA: special.2010.07.28

But of course, we also want to be loved - we want to be rewarded unconditionally without any contingencies whatsoever.

但当然，我们都想被喜爱,-我们都想无条件的得到报酬,没有任何别的可能。

耶鲁公开课 - 弥尔顿课程节选

But of course, during the summer, 'cause it's, there's no roof on it, so

但是当然，因为它没有房顶，所以在夏天

莎士比亚环球剧院 - SpeakingMax英语口语达人

But of course, there is a third possibility, that it doesn't get rich at all.

BBC: China: Does it have to become more like us?

Gold is property of neither the left nor the right but of the people.

FORBES: Sen. Marco Rubio Seeks New Taxpayers, Not New Taxes

But of course as I reflect I realize my wingspan will never be wide enough.

FORBES: The Right to Choose: Work and Motherhood