关于google的提问，have detected unusual traffic

[renewingtd]

我最近在使用无界翻墙时，当上google后。总在收到google的About this page

Our systems have detected unusual traffic from your computer network. This page checks to see if it's really you sending the requests, and not a robot. Why did this happen?

但无界代理临时城市我不知道是哪个，