1. In his recent book Earth Politics, Ernst Ulrich von Weizsacker wrote that "perhaps 90 percent of the destruction of animal and plant species, soil erosion, forest destruction and creation of deserts is taking place in developing countries."
    在其新作《地球政治学》一书中，厄恩斯特·乌尔里克·冯·魏茨泽克写道："动植物物种灭绝，土壤受侵蚀，森林被毁，沙漠产生，在这些破坏中，也许有90%正发生在发展中国家。"

2. Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.
    森林火灾时常由破碎的玻璃或人们随手扔掉的香烟头引起。

3. Firemen had been fighting the forest fire for nearly three weeks before they could get it under control.
    消防队员们同那场森林大火搏斗了将近3个星期才最后把火势控制住。