reinvent the wheel

Verb

 * 1)  To do work unnecessarily when it has already been done satisfactorily by others; to attempt to devise a solution to a problem when a solution already exists.

Translations

 * Arabic:
 * Chinese:
 * Mandarin: 做無用功
 * Czech: objevit Ameriku
 * Danish: opfinde den dybe tallerken
 * Dutch: het wiel opnieuw uitvinden
 * Finnish: keksiä pyörä uudelleen
 * French:
 * Galician: reinventar a roda
 * German: das Rad neu erfinden
 * Hungarian:, feltalálja a meleg vizet
 * Italian: scoprire l'acqua calda
 * Japanese: 車輪の再発明
 * Korean:
 * Lithuanian: išradinėti dviratį
 * Polish: wynajdywać koło na nowo, na nowo odkryć koło
 * Portuguese: reinventar a roda
 * Romanian: reinventa roata
 * Russian:
 * Serbo-Croatian:
 * Cyrillic: о̀ткрити то̏плӯ во̀ду, откри́вати то̏плӯ во̀ду, ѝзмислити то̏плӯ во̀ду, изми́шљати то̏плӯ во̀ду
 * Roman: òtkriti tȍplū vòdu, otkrívati tȍplū vòdu, ìzmisliti tȍplū vòdu, izmíšljati tȍplū vòdu
 * Spanish:
 * Ukrainian:
 * Vietnamese: