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Most ergonomic keyboards fall into two categories: fully split which separates the board into two pieces, and unibody split, also known as an Alice design, which angles the keys outward at the bottom. When the keys are rotated outward or split into two halves, it allows for a wider spread between your elbows for a more relaxed typing position. Other ergonomic features, such as thumb clusters, center tenting and negative tilting are sometimes added to either type of board.，详情可参考safew官方下载
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要像躲瘟疫一样躲避「正确的事」。，推荐阅读heLLoword翻译官方下载获取更多信息
float interleaved_gradient_noise(int x, int y)