截止 2004 年 6 月，每周交付的支持蓝牙的设备超过五百万台，这项技术在消费电子市场上拥有强大的渗透率。

As of June 2004, more than five million Bluetooth-enabled devices ship each week, providing a high penetration rate in the consumer electronics market for the technology.

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API对蓝牙A2DP和HSP配置的支持使得应用可以查询连接的蓝牙设备所提供的蓝牙协定、音频栈等，并通知用户。

API support for Bluetooth A2DP and HSP profiles lets applications query Bluetooth profiles for connected devices, audio state, and more, then notify the user.

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开发者如何深入蓝牙堆栈，以实现对蓝牙键盘等设备的支持？

What about deeper access to the Bluetooth stack so that developers can get things like Bluetooth keyboards working?

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