Materials science
第二十八条 增值税法第二十四条第一款第三项所称古旧图书，是指向社会收购的古书和旧书。
。Line官方版本下载对此有专业解读
:first-child]:h-full [&:first-child]:w-full [&:first-child]:mb-0 [&:first-child]:rounded-[inherit] h-full w-full，详情可参考heLLoword翻译官方下载
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- satisfiable: Boolean. True if the formula is satisfiable