用手机控制照相机的闪光灯、5倍变焦镜头和快门简直让人啼笑皆非，还要让手机给这些照片贴上地理标签，并且在手机上切换程序每次都会切断两者之间的连接。

It was a neat party trick to control the camera's flash, 5x zoom and with the phone -- and to have the phone geotag those pictures -- but switching apps on the phone disconnected the two every time.

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美国许多产品像相机、电脑、手机，都贴有“中国制造”的标签。

In the United States, many products - such as cameras, computers and mobile phones - carry the label "Made in China."

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本教程是使用默认的相机对光线投射，确保你的场景中的摄像机，其标签设置主相机。

The tutorial seems to be using a default camera for the Raycast, make sure you have a camera in the scene that has its Tag set to Main camera.

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