它有一个后置摄像头和先进的成像系统。

B. It will have one rear-facing camera and advanced imaging system.

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它有两个后置摄像头和先进的成像软件。

C. It will have two rear-facing cameras and advanced imaging software.

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例如，NookColor没有前置和后置摄像头，陀螺仪，GPS全球定位系统，G3无线连接(只有wifi)。

For instance, it has no front - and rear-facing cameras, no gyroscope, no GPS, no G3 wireless connection (only WiFi).

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