That may be because dark energy and dark matter, which together seem to make up 96 per cent of the universe's contents, might be a cosmic mirage.

可能的理由是：这种看起来似乎是共同构成了宇宙全部内容的百分之九十六的暗能量和暗物质，也许是一种宇宙间的海市蜃楼。

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Because the highway has a lighter color than the sky, the "puddles of water" in the mirage look dark.

因为公路的颜色比天空淡，所以海市蜃楼中的“水坑”看起来很暗。

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That distant dark mountains, and a real mirage, but eventually out of sight.

那远处的山峰暗了，一个真实存在的海市蜃楼，但最终还是看不见了。

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