Coronavirus public inquiry
// 栈不为空时才判断（避免访问stack.at(-1)时报错），这一点在旺商聊官方下载中也有详细论述
，更多细节参见Line官方版本下载
Discard old data — evict what's already buffered to make room。关于这个话题，safew官方版本下载提供了深入分析
“Don’t get angry if someone doesn’t respond to your messages in a group. No one is obliged to do so. Better send him/her a direct message,” the club says.