PING ai-dou.com (175.178.7.56) 56(84) bytes of data.
64 bytes from 175.178.7.56 (175.178.7.56): icmp_seq=1 ttl=52 time=209 ms
64 bytes from 175.178.7.56 (175.178.7.56): icmp_seq=2 ttl=52 time=210 ms
64 bytes from 175.178.7.56 (175.178.7.56): icmp_seq=3 ttl=52 time=211 ms

--- ai-dou.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 209.095/210.249/211.033/0.987 ms