Google said that its turn-by-turn navigation system may be supported by ads in the future.

Google表示，未来广告可以支持其逐向道路导航系统。

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Maps and turn by turn navigation are great, although the speaking voice of the turn by turn is just awful.

地图和语音导航棒极了，不过语音听起来很糟糕。

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Nokia Drive delivers a full-fledged personal navigation device (PND) with free, turn-by-turn navigation and dedicated in-car-user-interface.

ENGADGET: Nokia Lumia 710 now shipping, global rollout slated for 'coming weeks'

Seemless voice control integration with smartphone calling, music, and turn-by-turn navigation is also very plausible.

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Turn-by-turn navigation doesn't provide a night mode, customizable map layers or manually specified rerouting.

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