Visible on the above image right are two flat top mesas in southern Mars, where the season is changing from Spring to Summer.

可以看到上面影像右侧是两座位于火星南部的平顶山，而那里的季节正从春天向夏天转变。

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The "seesaw" brought cycles of intensely cold winters and easterly winds, then switched abruptly to years of heavy spring and early summer rains, mild winters, and frequent Atlantic waves.

这个“跷跷板”带来了极度寒冷的周期性的严冬和东风，然后突然转换成多年的阴沉春季、过早降雨的夏季和温和的冬季，以及频繁的大西洋海浪。

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Years of heavy spring and early summer rains, mild winters, and frequent Atlantic storms, or to periods of droughts, light northeasterly winds, and summer heat waves.

多年的春季和初夏大雨，温和的冬季，频繁的大西洋风暴，或干旱时期，轻微的东北风，和夏季热浪。

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In the spring and summer,he says, he would expect the prevailing winds in Western Europe to come from the West or Southwest - which would mean that the ash would be pushed towards the Arctic or Siberia.

VOA: standard.2010.04.16

Both books demonstrate how natural time changes spring to summer, day to night can heighten the threat of contagion and force humans to change their routines and behavior.

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As spring turned to summer and people left on vacation, more of the houses were empty and there were fewer opportunities for trash-can forage.

NEWYORKER: Wakefield

The seasonal increase results from tons of carbon dioxide, which had been frozen into a southern winter ice cap, returning into the atmosphere as southern spring turns to summer.

ENGADGET: Curiosity rover finds radiation levels on Mars are safe for humans