1. On both sides of it new cities appeared, trees were planted, and deserts became grasslands.
    在长城的两边,出现了新城市, 种了树木, 沙漠变成了草原.

2. It is a world of red sandy deserts (hence its name----the Red Planet), cloudless skies, savage sandstorms, chasms wider than the Grand Canyon and at least one mountain more than twice as tall as Everest.
    这是一个红色沙漠的世界（因而得名：红色行星），无云的天空，凶猛的沙暴，比大峡谷还宽的裂缝，起码有一座山有珠穆朗玛峰的近两倍高。

3. 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。"