PING www.raetts.cn (118.178.87.239) 56(84) bytes of data.
64 bytes from 118.178.87.239 (118.178.87.239): icmp_seq=1 ttl=51 time=228 ms
64 bytes from 118.178.87.239 (118.178.87.239): icmp_seq=2 ttl=51 time=228 ms
64 bytes from 118.178.87.239 (118.178.87.239): icmp_seq=3 ttl=51 time=227 ms

--- www.raetts.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 227.894/228.184/228.627/0.636 ms