Carson Schmidt and his friend spotted the man in distress after noticing a pair of skis protruding from the snow. The pair sprang into action, digging him out before he suffocated.
Additional reporting by Danielle Kaye and Pritti Mistry，推荐阅读快连下载安装获取更多信息
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Uniform regions (solid backgrounds, smooth gradients) get stored as large blocks. Detailed regions (edges, textures) get subdivided into smaller blocks. You end up with a compressed representation that preserves detail where it exists and simplifies where it can.，这一点在夫子中也有详细论述
Фото: Liesa Johannssen / Reuters