Because traditional black asphalt roofs heat up in summer and strain the air conditioners.

因为传统的黑柏油屋顶在夏天的时候会吸热，加重了空调的负荷。

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They rolled in the dew, they cropped mouthfuls of the sweet summer grass, they kicked up clods of the black earth and snuffed its rich scent.

看到满是露水的青草，他们蜂拥而至。满满咬一口夏天香甜的青草，踢起黑土块，猛嗅它肥沃的气息。

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In winter the frost is always there before it comes to us; and deep into summer I have found snow under that black hollow on the North-East side!

在冬天那儿总是比我们这里先下霜；盛夏时，在东北面那个黑洞里我还发现过雪哩！

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And,in the summer, the temperature in the desert in Black Canyon could reach as high as forty-eight degrees Celsius.

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This past summer, the Black Entertainment Television network,BET, honored Wyclef with its Award for Humanitarian Work.

VOA: special.2009.11.25

Snelson first delved into sculpture during his first summer at the prestigious Black Mountain College in 1948, when such legends as Willem DeKooning, John Cage and Merce Cunningham were on faculty.

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He also lost credibility last summer by claiming that a black Mississippi boy had been lynched for dating white girls, when forensic experts concluded that the boy had committed suicide.

ECONOMIST: Jesse Jackson

Less expensive still is the summer truffle, a milder tasting black truffle that grows throughout Europe ( even in England) during the warmer months.

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