While many people will likely find Call Phones in Gmail a convenient option for Internet voice communications, don't plan on using it to call 911.

虽然大多数人会认为Gmail电话是互联网语音通讯的一个便利选择，但别指望能用它拨打911。

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Since the digital generator is flexible, convenient and stable and it can continue to work for a long time, is widely used in medical, communications, field operations and other fields.

数码发电机作为一种便携式的移动电源，以其灵活、方便、能够长时间供电等特点，被广泛应用在医疗，通信，野外作业等领域。

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Model of software process not only provides the developing criteria of software for developers, but also makes communications between developers more convenient.

软件过程模型为软件开发者提供了软件开发的标准，也方便了开发者之间的交流。

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