1. In the scorching desert, the weary travelers could not tell if the oasis in the distance was real or just a mirage.
在炎热的沙漠中，疲惫的旅行者无法判断远处的绿洲是真实存在还是只是一个幻觉。

2. He was so dehydrated that he started seeing mirages, imagining water flowing in the barren landscape.
他因为脱水太严重，开始出现幻觉，想象着水在贫瘠的景观中流动。