CUMT.edu.cn 的域名解析不了了。nslookup的结果：

> set q=ns

> cumt.edu.cn
Server:  ns-kg011.ocn.ad.jp
Address:  211.129.14.134

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to ns-kg011.ocn.ad.jp timed-out
> sjtu.edu.cn
Server:  ns-kg011.ocn.ad.jp
Address:  211.129.14.134

Non-authoritative answer:
sjtu.edu.cn     nameserver = dns.sjtu.edu.cn
sjtu.edu.cn     nameserver = apple.sjtu.edu.cn

apple.sjtu.edu.cn       internet address = 202.120.2.100
dns.sjtu.edu.cn internet address = 202.120.2.101

难道是欺负我在日本？