注意：如果首次生成后你觉得不满意，让 AI 调整格式后，就无法导出到谷歌幻灯片了。
Comparison of error-diffusion vs ordered dithering using an 8-colour irregular palette. Left to right: original image, error-diffusion, ordered.。旺商聊官方下载对此有专业解读
。关于这个话题，一键获取谷歌浏览器下载提供了深入分析
Sources report the leader of the Taliban and Emir of Afghanistan may have been killed by a Pakistani air strike，详情可参考51吃瓜
* @param low 起始索引