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工作学习 / 求学深造 / 请帮忙找错：A mirage is an (atmospheric) optical illusion (in what) an observer sees a nonexeistant body of water (or) an image of (some object)
-yunnanian(yunnanian);
2001-12-26(#313684@0)
B
-camwood(☆千里草☆);
2001-12-26(#313714@0)
and d(some objects)
-yunnanian(yunnanian);
2001-12-26(#313719@0)