：可设定广告在特定时间段展示，设置时间以实现效果最大化，设置时间which is an approved method of thawing frozen food如在目标受众最活跃的设置时间etelegram 400 bad request file is too big时段投放，夜间关闭。设置时间etelegram 400 bad request failed to get http url content设置时间