車しゃ輪りんの再さい発はつ明めい

expression

reinventing the wheel

Idiomatic expression meaning to waste effort creating something that already exists, often used critically.

• 新あたらしいシステムを作つくるより、既き存ぞんのものを使つかったほうがいい。車しゃ輪りんの再さい発はつ明めいは避さけるべきだ。

  Rather than building a new system, it's better to use an existing one. We should avoid reinventing the wheel.