For example, Apple rejects programs that would let you make phone calls over the Internet, thereby avoiding using up cellular airtime.

比如，苹果拒绝通过网络打电话(从而节省手机通话时间)的软件。

youdao

Skype, launched in 2003, lets users make free phone calls over the Internet, forcing traditional telecoms operators to slash their prices.

而2003年Skype的发布则使得用户可以通过因特网拨打免费电话，从而迫使电信运营商不得不大幅降价。

youdao

The more Americans abandon it to go mobile-only or make phone calls over the internet, the more fragile it becomes: its high fixed costs have to be spread over ever fewer subscribers.

ECONOMIST: The decline of the landline

But today's students don't even use phone lines--they rely entirely on cellular connections or make free phone calls over the Internet, using programs like Skype.

FORBES: Dorm Rooms: 2006 Vs. 1976

Unlike competitor's remotes, the Lenovo 4-in-1 remote controller can also be used as a VOIP handset3 to make and receive phone calls over the Internet, similar to a typical cordless telephone.

ENGADGET: Lenovo IdeaCentre A600 All-in-One Desktop unleashed