But perhaps the biggest challenge is establishing distribution networks .

但最大的挑战或许是建立经销网络。

Road networks are expanding , public services are improving .

公路网在扩张，公共服务设施也在升级。

Electronic networks may change that .

电子网络也许能够改变这种生活方式。

Ethnic networks can address this problem .

民族人脉网就能解决这个问题。

Such networks do not come cheap .

这种人际网络可是价格不菲。