1. In a mirage the desert will mimic a lake.
    在海市蜃楼中，沙漠有时会现出湖泊的形象。

1. 海市蜃楼;幻境
    A mirage is something which you see when it is extremely hot, for example in the desert, and which appears to be quite near but is actually a long way away or does not really exist.

    e.g. Through my half-closed eyelids I began to see mirages...
           透过我半睁半闭的双眼，我看到了海市蜃楼。
    e.g. It hovered before his eyes like the mirage of an oasis.
           它在他眼前晃动，好像海市蜃楼里的绿洲。

2. 妄想;幻想
    If you describe something as a mirage, you mean that it is not real or true, although it may seem to be.

    e.g. The girl was a mirage, cast up by his troubled mind...
           那个女孩是他的幻觉，是他那忧郁不安的头脑妄想出来的。
    e.g. The objectivity of science is a mirage.
           所谓科学的客观性是一种幻想。

1. something illusory and unattainable

2. an optical illusion in which atmospheric refraction by a layer of hot air distorts or inverts reflections of distant objects