花旗银行自1960年代中期就开始经营大概的运营网络。

Citigroup has run a skeletal network since the mid-1960s.

youdao

如果各大运营商认为在世界上一些最贫困的地区经营移动通讯网络能够赢利，那么U SF是否终于得以使用了？

If operators reckon there is money to be made running mobile networks even in some of the poorest parts of the world, have USFs had their day?

youdao

网络运营商本身并不生产手机，而手机生产商则不经营网络。

Operators do not manufacture their own phones, and handset-makers are not operators.

youdao