1Taking all these factors into consideration, we naturally come to the conclusion that...

把所有这些因素加以考虑，我们自然会得出结....

2.Taking into account all these factors, we may reasonably come to the conclusion that...

考虑所有这些因素,我们可能会得出合理的结....

 3.Hence/Therefore, we'd better come to the conclusion that...

 因此，我们最好得出这样的结论.....

 4.There is no doubt that () has its drawbacks as well as merits.

 毫无疑问，（）有优点也有缺点。