萬能句子：
　　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, …
　　同義詞的使用：
　　解決：solve, resolve, deal with, cope with, handle, tackle
　　消除：get rid of, eradicate, eliminate
　　依賴：rely on, depend on, count on
　　十分：very much, immensely, hugely, largely, greatly, enormously, tremendously
　　損害：damage, hurt, injure, harm, impair
　　給予：give, offer, render, impart, provide
　　發(fā)展：develop, cultivate, foster
　　優(yōu)勢：advantage, merit, virtue, benefit, upside, strength
　　缺陷：disadvantage, detect, demerit, drawback, downside, weakness a