把相机调到手动模式，并且要关上闪光灯。

Set the camera to manual mode and turn off the flash.

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在过去，转化人热动能成电能的装置，像手动曲柄收音机，计算机和闪光灯，都需要人全面的参与。

In the past, devices that turned human kinetic energy into electricity, such as hand-cranked radios, computers and flashlights, involved a person's full participation.

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照片说明：关闭闪光灯，将相机设为手动模式。

Photo Tip: Turn off your flash and set your camera to manual mode.

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