与此同时，北半球进入夏季，南极倾斜远离太阳，南半球已开始感受到冬天的寒冷。

At the same time that the Northern Hemisphere is entering summer, the South Pole is tilted away from the sun, and the Southern Hemisphere is starting to feel the cold of winter.

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根据日本的研究，在80年代和90年代之间，南半球的南极鲸数量急剧下降。

Japanese studies showed that the Numbers of Antarctic minke in the Southern Hemisphere appeared to drop significantly between the 1980s and 1990s.

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这些气球在使用前都要经过加热出来，以恢复弹性。即使是南半球的夏天，南极站附近的温度也只有- 4华氏度(- 20摄氏度)，气球都会冻得失去弹性。

The balloons must first be heated to regain their elasticity, which is robbed from them in storage by the -4 degrees Fahrenheit surface temperatures in the southern hemisphere's summer.

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