Basically, there's not a lot we can do about it.
总的说来，我们对此做不了很多事。
He basically just sits there and does nothing all day.
他根本就是一天到晚坐在那儿无所事事。
Yes, that's basically correct.
对，基本正确。
And that's it, basically.
说穿了，就是这么回事。
Basically, the article can be summarized in three sentences
这篇文章基本上可以概述为3句话。