Basically, there's not a lot we can do about it.
總的說來，我們對此做不了很多事。
He basically just sits there and does nothing all day.
他根本就是一天到晚坐在那兒無所事事。
Yes, that's basically correct.
對，基本正確。
And that's it, basically.
說穿了，就是這么回事。
Basically, the article can be summarized in three sentences
這篇文章基本上可以概述為3句話。