When driving in a car on a hot summer day, you may see what looks like shimmering water on the road, which, as science tells us, is really just a mirage, an illusion caused by the heating of the air.

在炎热的夏天开车时，你可能会在路上看到闪闪发光的水，但科学告诉我们，这其实只是海市蜃楼，是空气加热造成的幻觉。

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Present-day concern with music is shown by the existence of something like a hundred summer schools in music, which cater for all grades of musicians, from the mere beginner to the skilled performer.

目前对音乐的关注表现在一百所夏季音乐学校的存在，这些学校满足各个级别的音乐者，从初学者到熟练的表演家。

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My mind is calm, like a lake on a quiet summer day.

我内心平静，就像夏日里平静的湖面。

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That would be like a hot summer day for Hampton Beach for us.

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The base will actually be built inside a real crater and the daytime temperature of -23 degrees Celsius is like a nice summer's day on Mars.

BBC: Destination Mars on Earth

Uncle Sam's obligations in the 1970s were little better than today's junk bonds when you consider how the real worth of the principal of those bonds melted away like ice on a hot summer's day.

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