PING www.tb50.cn (154.7.57.34) 56(84) bytes of data.
64 bytes from 154.7.57.34 (154.7.57.34): icmp_seq=1 ttl=119 time=155 ms
64 bytes from 154.7.57.34 (154.7.57.34): icmp_seq=2 ttl=119 time=154 ms
64 bytes from 154.7.57.34 (154.7.57.34): icmp_seq=3 ttl=119 time=154 ms

--- www.tb50.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 154.357/154.639/155.160/0.488 ms