In total, some 5,000 people work in Antarctica during its summer months, across 80 research stations operated by about 30 countries.
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这种效果在物理学上被称为「朗伯余弦定律」（Lambert’s Cosine Law），其核心特征就是无论从哪个角度观察，屏幕的亮度看起来都是一样的。
63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54