The service, unveiled on Wednesday night, will let users make free calls at least to the end of this year within the US and Canada.

这项功能在星期三晚上揭开面纱，至少年内能让美国和加拿大用户拨打免费电话。

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The well-connected executive can use any number of voice-over-internet services to make free calls; but the rural poor, if they have phones at all, must pay high rates.

一个掌握了便捷联系方式的执行官可以使用网上声讯服务去拨打任意数量的免费电话。但是对于贫苦的农民，即使他们有电话的话，也要付高费用。

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Survivors packed temporary phone booths and charger stations on Gyegu`s main street, trying to make free calls to relatives and friends or recharge their cellphones.

在结古镇主街上，幸存者涌进公用电话亭给亲属朋友们拨打免费电话，有的则到手机充电站中为自己的手机充电。

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Now, according to The Verge, iPhone users can make free calls using a WiFi connection, with no carrier data charges, or using their data plan.

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Since there's no need to register, build a friends list and keep the app open to use it, you can even make free calls to people who aren't on your contact list.

ENGADGET: Viber VoIP iPhone app: 3G calling, no registration, and totally free

Vonage has sealed a partnership with The Cloud, a U.K. national Wi-Fi network operator with over 7, 000 hotspots in airports, rail stations and pubs where handsets can be used to make free calls.

FORBES: Magazine Article