Google将在美国大学校园和机场内设立红色电话亭来推广这项功能。 这些电话亭可以在北美区域内免费拨打电话，拨打北美区域外的电话也比其他的收费便宜。

Google is also going to promote the service by setting up red phone booths in US universities and airports, letting them make free calls inside North America, and cheaper ones outside it.

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美国人走到电话亭：“你好，是银行吗？

How many persons are there in your bank this evening?

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