大英综合教程4课文翻译第三单元

大英综合教程4课文翻译第四单元

大英综合教程4课文翻译 课文 *The Challenges of Modern Society* 原文：In the modern world, we face many challenges that previous generations did not have to deal with. One of the biggest challenges is environmental degradation. Our planet is suffering from pollution, defores...