明显的事实
The plain truth is that people are most often self-centered.
众所周知
It is well-known that modern science and technology have dramatically changed our society.
不可否认
There is no denying that learning new skills and knowledge contributes directly to enhancing job opportunities.
我永远相信
Forever, I believe that education is the key to success.
有必要指出的是
It is necessary to point out that environmental protection is crucial for the sustainability of our planet.
总之，我想说的是
In conclusion, I would like to say that the quality of life is as important as life itself.
就我而言，我相信
As far as I am concerned, I believe that technology will continue to play a vital role in our future.
在我看来，有必要
In my opinion, it is essential to encourage lifelong learning to adapt to the rapidly changing world.
我坚信
I am firmly convinced that the efforts to protect our cultural heritage are worthwhile.
最后，必须强调的是
Finally, it must be emphasized that every individual has a responsibility to contribute to society.
这些句子涵盖了不同的主题和语境，可以帮助你在考研英语中更好地表达观点和论据。建议你在写作和翻译时，根据具体的题目和要求，选择合适的句子来支持你的论点。