To do something again, from the beginning, especially in a needless or inefficient effort
重做：從頭開(kāi)始重新做某事，特別是不需要的或無(wú)效率的努力
“School districts need not reinvent the wheel every time they try to improve their schools”(&b{Washington Post})
“每次試圖改善學(xué)校狀況時(shí)學(xué)校區(qū)用不著每次都從頭重新做”(&b{華盛頓郵報(bào)})
To recast something familiar or old into a different form
改頭換面：把相同的或舊的東西重新以另外的形式表現(xiàn)出來(lái)
“Call it reinventing the wheel or recasting old ideas, but these contemporary versions have a spirit and style all their own”(&b{New York Times})
“稱它是重新從頭做也好，重新表達(dá)老主意也好，但是這些當(dāng)代的版本有它們自己的精神和風(fēng)格”(&b{紐約時(shí)報(bào)})