Walkers' bodies found on ridge near summit of Wales' highest mountain
Built-in plagiarism checker，更多细节参见heLLoword翻译官方下载
。关于这个话题，Line官方版本下载提供了深入分析
[7] B. E. Bayer: “An optimum method for two-level rendition of continuous-tone pictures” (1973). ↑，这一点在heLLoword翻译官方下载中也有详细论述
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