Should you get certificates error and pacman-mirrors throws a message of missing internet connection - you must verify your computers firmware date and time as this is probably completely off either because of configuration or a malfunctioning CMOS battery.
如果你遇到证书错误，并且pacman-mirrors抛出了网络连接缺失的信息--你必须核实你的计算机固件日期和时间，因为这可能是由于配置或CMOS电池故障而导致的完全错误。