zhè tái / diàn nǎo / lián jiē / de / shì / zhuān yòng / wǎng lù / bù néng / fǎng wèn / wài bù / wǎng zhàn

这台电脑连接的是专用网路，不能访问外部网站。

This computer is connected to a dedicated network and cannot access external websites.