3. Obviously, it is high time that we took some measures to solve the problem.
4. To conclude my essay, I would like to quote an old saying “…”
我想引用一句古语来结束我的文章：“…”
5. Up until now, we can see it clearly that____ is not beneficial or harmful in itself. The key lies in the user---so long as we can make proper use of it, it can be most helpful to us in many respects.
呼吁/解决办法
1. Both governments and ordinary citizens should join hands to make this world a better place to live in, not only for ourselves, but also for future generations.
不仅仅是为了我们，更是为了我们的后代，政府和普通公民应该联合起来，使这个世界变成更美好的家园。
2. I suggest the department concerned taking some effective measures to improve the present situation.
我建议有关部门采取一些有效措施改善现状。
3. When everyone realize the significance of environmental protection and adopts some feasible measures, I am fully confident that we can enjoy a cleaner environment.
当每个人都充分意识到环保的重要性，并采取可行的措施，我坚信我们能享有更干净的环境。
4. Obviously, it is high time that we took some effective measures to solve the problem.
/Consequently, it is high time that we made great efforts to put an end to...
5. What we should make sure is to absorb the essence and discard the dregs.
我们要做到的是取其精华，弃其糟粕。
6. We are blessed with new opportunities and faced with new challenges.
我们被赋予新的机会和面临着新的挑战。
7. I firmly believe that if we try our best to..., can we...
8. It is high time that we called on the efforts from all sides to deal with this problem properly.
10. In my mind, the government and the citizens should join hands to put an end to these_____.
11. It is more than necessary that all of us joined in the efforts to fight against this notorious phenomenon.
12. If everyone makes a contribution to environmental protection, the world will become much more beautiful.
如果每个人都为保护环境做出贡献，世界会变得更加美好。
13. Let’s work together to make our world a better place.
让我们一起努力把世界变得更加美好。