For this reason the northern hemisphere enjoys summer while the southern has winter; and vice versa, when we have mid-winter, people in the other hemisphere are in the midst of summer.

因此，当北半球正享受着夏季的时候，南半球则正在经历着严冬，反之亦然，当我们处在冬天的时候，南半球的人们正在过着夏天。

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The flare spread from Active Region 1158 in the sun's southern hemisphere, which had so far lagged behind the northern hemisphere in flash activity. It followed several smaller flares in recent days.

此次耀斑是从太阳南半球的活跃区1158区延伸开来，此前太阳南半球的耀斑活跃性落后于北半球，此后几天又发生了几次小规模的耀斑活动。

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But the course swine flu will take in the Southern Hemisphere - and, this coming fall, in the Northern Hemisphere - still isn't clear.

但是猪流感会在南半球怎样传播——还有，今年秋天，它在北半球的传播路线——这些都还不清楚。

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Professor Scott suggests that to some extent, in terms of public grief, a dividing line can be drawn between the "more reserved" northern hemisphere and "more emotional" southern hemisphere.

BBC: What is 'national mourning' for?

The sun's magnetic north and south poles were in their respective northern and southern hemisphere several months ago.

CNN: Sun flips magnetic field

More active travellers might consider the annual World Naked Bike Ride, happening on 10 March, 2012 in the Southern Hemisphere, and in June in the Northern Hemisphere.

BBC: Strip down for the end of summer