Polishing my nails with fun, unique shades became a creative outlet.

涂抹我的指甲是一件有趣的事情，画在上面的特殊形状彰显了我的创意。

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For more ambiguous types of waste, such as a piece of plywood with nails driven through it, the robot uses a spectrometer to recognise objects based on the unique patterns of light they reflect.

FORBES: ZenRobotics Develops a Garbage Sorting Robot