例句：

　　By contrast, deserts and areas covered by ice and snow, these places have high albedos.

　　相比之下，沙漠和冰雪覆蓋的地區，反照率很高。

　　Their remains, though lying in one of the world's largest deserts, are buried in upside-down boats.

　　他們的遺體雖然躺在世界上最大的沙漠之一，卻被埋在亂七八糟的船上。

　　Deserts spread throughout the world as vegetation shifted drastically in North America, Europe and Asia.

　　隨著北美、歐洲和亞洲植被的急劇變化，沙漠遍布世界各地。

　　Finally they returned yet again to the land as tortoises, some of which now live in the driest of deserts.

　　最終，它們再一次回到陸地，進化成為陸龜，其中的一些現在生活在非常干旱的沙漠中。