And in truth, the mysterious impression produced on Cosette in the depths of the forest of Chelles by the hand of jean Valjean grasping hers in the dark was not an illusion, but a reality.
而且，从前在谢尔的树林深处，冉阿让曾牵着珂赛特的手从黑暗中走出来，珂赛特当时得到的那种神秘印象并不是幻觉，而是现实。
The mysterious substance known as dark matter may actually be an illusion created by gravitational interactions between short-lived particles of matter and antimatter, a new study says.
一项新的研究表明：被称作暗物质的神秘物质可能只是一种虚像，由物质与反物质的短寿命粒子之间的引力相互作用而产生的。
Thee images appear to show rows of dark "conifers" sprouting from dunes and hills on the planet surface. But the scene is actually an optical illusion.
从图片中我们可以看出，成排的的“针叶林”从火星表面的沙丘和小山上长出。而事实上，这样的场景只是一种光学错觉。
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