Just a free service.

只是一个免费的服务。

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For example, we just released Gmail, a free E-mail service.

比如我们刚刚上线的Gmail，一款免费的电子邮件服务。

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As part of adopting a consumer-driven contract, a provider is free to evolve and innovate its service offering just so long as it continues to satisfy its existing obligations.

若提供者接受了一个消费者驱动的契约，那么它只需保证已有约束仍能得到满足，即可自行改进与修改其服务。

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As it stands, the seven day free trial is just enough to get a taste of the service, but probably not enough to convince those enjoying the fruits of its free competitors to jump ship.

ENGADGET: doubleTwist takes on Pandora with Magic Radio subscription service

Your wish just came true thanks to a new site called Pinstagram which provides a free service that lets you enjoy the best of Instagram presented in a Pinterest style interface on the web.

FORBES: Cool Site of the Day: Pinstagram (Pinterest + Instagram)

This is just the tip of the iceberg for Nintendo TVii, which will be a free service when it launches in the United States and Canada.

FORBES: Has Nintendo Beat Apple to iTV?