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

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把所有这些因素加以考虑,我们自然会得出结论……

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论……

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

因此,我们最好得出这样的结论……

There is no doubt that (job-hopping) has its drawbacks as well as merits.

毫无疑问,跳槽有优点也有缺点.

All in all, we cannot live without … But at the same time we must try to find out new ways to cope with the problems that would arise.

总之,我们没有…是无法生活的.但同时,我们必须寻求新的解决办法来对付可能出现的新问题.

　　提出建议:

It is high time that we put an end to the (trend).该是我们停止这一趋势的时候了.

It is time to take the advice of … and to put special emphasis on the improvement of …

该是采纳……的建议，并对……的进展给予特殊重视的时候了。

There is no doubt that enough concern must be paid to the problem of …

毫无疑问,对……问题应予以足够的重视.

Obviously, … If we want to do something … , it is essential that …

显然,如果我们想做某事,很重要的是…

Only in this way can we … 只有这样，我们才能……

It must be realized that …我们必须意识到……

　　预示后果:

Obviously, if we don't control the problem, the chances are that … will lead us in danger.

很明显,如果我们不能控制这一问题,很有可能我们会陷入危险.

No doubt, unless we take effective measures, it is very likely that …

毫无疑问,除非我们采取有效措施,很可能会……

It is urgent that immediate measures should be taken to stop the situation.

很紧迫的是,应立即采取措施阻止这一事态的发展.