Google镜像
https://g2.wen.lu
https://g.alexyang.me
https://g.zrj766.com
https://g.libnull.com
https://g.jikewenku.cn
https://letsgg.tk
https://www.wacao.org
https://ggss.cf
https://www.onk6.com
Google scholar镜像
https://g2.wen.lu/scholar
https://letsgg.tk/scholar/?hl=zh-CN
https://g.alexyang.me/scholar/?hl=zh-CN
https://g.libnull.com/scholar/?hl=zh-CN
https://www.wacao.org/scholar/?hl=zh-CN