PING www.28jiaoyu.com (199.187.20.121) 56(84) bytes of data.
64 bytes from 199.187.20.121 (199.187.20.121): icmp_seq=1 ttl=57 time=152 ms
64 bytes from 199.187.20.121 (199.187.20.121): icmp_seq=2 ttl=57 time=151 ms
64 bytes from 199.187.20.121 (199.187.20.121): icmp_seq=3 ttl=57 time=151 ms

--- www.28jiaoyu.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 151.497/151.742/152.151/0.291 ms