当然，我的弟弟跑到他的朋友们那里去了，而我自己也有很多事情要做。

My brother, of course, raced off to be with his friends, while I had plenty to do myself.

youdao

我所有的亲戚都会去，当然我弟弟那些讨厌的朋友们也会去。

All my relatives are gonna be there, as well as my brother's horrible friends of course.

youdao

当然，我也感谢我在学校交了这么多好朋友。

Certainly, I am also thankful that I have made so many good friends at school.

youdao

Now, I do certainly understand what your correspondent, as it were, were saying about beauty.

当然，我理解可以说您的朋友，对美丽的看法。

普林斯顿公开课 - 人性课程节选

Well, he's a good friend of mine, but I think he may be overstating it a little bit; we have some disagreements.

当然他是我一个很好的朋友,但我觉得他在这一点上有点言过其实,我们在这点上意见不合

耶鲁公开课 - 金融市场课程节选

Now of course,this is worse for me, as somebody who cares about my friend,that he's died.

对于一个在乎朋友的人来说，朋友死了，当然这个对我来说更坏。

耶鲁公开课 - 死亡课程节选