检测是否网络连接（不论你是用\"猫\"还是\"ADSL\"或其他的都能检测出来是否在网上）-test network connectivity (whether you use "cat" or "ADSL" or the other whether it can detected on the Internet)

检测是否网络连接（不论你是用"猫"还是"ADSL"或其他的都能检测出来是否在网上）-test network connectivity (whether you use "cat" or "ADSL" or the other whether it can detected on the Internet)