Square wheel

A square wheel is a wheel that, instead of being circular, has the shape of a square. While literal square wheels exist, a more common use is as a metaphor meaning stereotypically bad or naïve engineering (see reinventing the wheel).

A square wheel can roll smoothly if the ground consists of evenly shaped inverted catenaries of the right size and curvature.

单词	Square wheel
释义	Square wheel 英语百科 Square wheel A square wheel is a wheel that, instead of being circular, has the shape of a square. While literal square wheels exist, a more common use is as a metaphor meaning stereotypically bad or naïve engineering (see reinventing the wheel). A square wheel can roll smoothly if the ground consists of evenly shaped inverted catenaries of the right size and curvature.
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