There are purple clothes, purple handbags, purple bicycles, purple furniture, even purple computers! But in the past, purple was a very expensive and unusual color.

有紫色的衣服，紫色的手提包，紫色的自行车，紫色的家具，甚至紫色的电脑！但在过去，紫色是一种非常昂贵和不寻常的颜色。

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Then there are big-ticket items such as pianos, bicycles and computers.

CNN: LITTLE EMPERORS

The bicycles and cars and computers and radios and calculators that inhabit their albums are a friendly lot.

NEWYORKER: Sound Machine

From pedal-powered computers on bicycles, to self-powered soldiers in militaries, Raaijen predicted human power would be developed widely in coming years.

CNN: Are we heading for a human-powered future?