This is much more true if you are yourself firewalled or behind a router .
这点会更加明显当你处于路由器和防火墙之后时。
Primo says he 's just firewalled his transponder .
他也锁住无线电收发器讯号。
" They have their r & d perfectly firewalled off , so they can continue to keep those people at work even if google.cn closes down , " said duncan clark , chairman of bda , a beijing-based consultancy .
