劍橋詞典the basic and most important reasons for doing or believing something 根本原則，首要原則 We seem to have forgotten why we're fighting this campaign - we really need to return to first principles . 我們似乎已經(jīng)忘記了發(fā)起這場運動的目的——我們確實需要回到根本原則上來。 返回 first principles