Obviously, we can draw the conclusion that.......

很明显，我们可以得出……结论。

I can draw the conclusion without question that he is lying.

我可以毫无疑问地得出结论他在说谎。

We can draw the conclusion: the hotel marketing is count for much.

我们能得出结论：酒店营销是非常重要的。

From what has been discussed above, we may safely draw the conclusion that…….

根据以上讨论的，我们完全可以得出结论……

From what has been discussed above, we may safely draw the conclusion that...

从上面所讨论的来看，我们可以得出这样的结论……。