万能句子：

　　1. Yet little has been done to solve this problem worldwide.

　　2. To make one final point, …

　　3. As we are all aware …

　　4. … has long been an issue debated mainly in … around the world.

　　5. One example is that …

　　6. Conversely

　　7. The final point that I would like to make is that …

　　8. Likewise, it is no longer required that … nor is it …

　　9. at all costs

　　10.What is important to remember is that …

　　11.preservation and protection

　　12.In this increasingly global world, …

　　同义词的使用：

　　解决：solve, resolve, deal with, cope with, handle, tackle

　　消除：get rid of, eradicate, eliminate

　　依赖：rely on, depend on, count on

　　十分：very much, immensely, hugely, largely, greatly, enormously, tremendously

　　损害：damage, hurt, injure, harm, impair

　　给予：give, offer, render, impart, provide

　　发展：develop, cultivate, foster

　　优势：advantage, merit, virtue, benefit, upside, strength

　　缺陷：disadvantage, detect, demerit, drawback, downside, weakness a