Reinvent the Wheel重複造輪

** to waste time and effort on creating something that already exists and works well

~~ 重複造輪；重複發明已有的輪子；無謂地重複；浪費時間創造已有的物件；做不必要的重複勞動。

~~ carry coals to Newcastle; bring sand to the beach; bring owls to Athens; spit into the wind; start from scratch; starting from zero; kill time; burn daylight

!! This cliché alludes to inventing a simple wheel from scratch, but the wheel is already circular that requires no improvement in that form. It most likely originated in business and industry in USA in the 1970s, urging their employees to pay attention to what others had invented and to innovate upon them, rather than recreating them from scratch. 這個陳詞濫調暗指從頭開始發明一個簡單的輪子，但輪子已經是圓形的，不需要對這形狀進行改進。它很可能起源於1970年代美國的商業和工業，敦促他們的員工關注他人的發明並對其進行創新，而不是從頭開始重新創造。

>> Open-source frameworks like React, Django, or TensorFlow are well-tested tools built over many years. By using an existing framework, the team saves time, avoids errors, and focuses on features that add real value -- the opposite of reinventing the wheel. 開源框架如React、Django或TensorFlow，是經過多年開發且充分測試的工具。透過使用現有框架，團隊節省了時間、避免錯誤，並專注於能增加真正價值的功能—這正是避免重複造輪的做法。

>> Instead of reinventing the wheel, the EU is adopting existing digital ID frameworks from Estonia and Finland, saving years of development time. 與其重複造輪，歐盟正在採用愛沙尼亞和芬蘭現有的數位身份框架，省下多年開發時間。

學勤教育中心英語專科導師 李啟文 教授