董永乐的盲窗

原文链接：http://hi.baidu.com/fysfxy/blog/item/fe4b932339207245ac34def8.html

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都试过了，基本上都能使：

server 133.100.11.8 prefer

server 210.72.145.44 (中国国家授时中心)
server 203.117.180.36
server 131.107.1.10
server time.asia.apple.com
server 64.236.96.53
server 130.149.17.21
server 66.92.68.246
server www.freebsd.org
server 18.145.0.30
server clock.via.net
server 137.92.140.80
server 133.100.9.2
server 128.118.46.3
server ntp.nasa.gov
server 129.7.1.66