2、it can be concluded from the discussion that...从中我们可以得出这样的结论
3、therefore, in my opinion, its more advisable...因此，在我看来，更可取的是……
4、all things considered，总而言之 it may be safely said that...它可以有把握地说……
5、therefore, we have the reason to believe that...因此，我们有理由相信……
6、i will conclude by saying... 最后我要说……