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考研英语复习资料免费下载：考研英语作文写作好句集锦 环保 1. At the time when technology means ever more harmful carbon in the air we breathe, we need these forests now more than ever. 当技术的发展意味着我们会吸入更多有害气体时，我们比任何时候更需要森林。 2. It is universally acknowledged that trees are indispensable to us. 全世界都知道树木对我们是不可或缺的。 3. An advantage of using the solar energy is that it wont create any pollution. 使用太阳能的优点是它不会产生任何污染。 4. The reason why we have to grow trees is that they can supply fresh air for us. 我们必须种树的原因是它们能供应我们新鲜的空气。 | 
