音標發(fā)音英式音標 [?pra?m m??r?d.i.?n]美式音標 [?pra?m m??r?d.i.?n]英式發(fā)音 美式發(fā)音 基本解釋本初子午線（從北機到南極的一根假想線，它穿過英格蘭的格林尼治，標示爲經(jīng)線0°，其他經(jīng)線以此爲測定標準）。同根派生 the prime meridian相關(guān)詞英英字典劍橋英英字典 the imaginary line from the North Pole to the South Pole that passes through Greenwich in England and marks 0° longitude, from which all other longitudes are measuredthe prime meridian劍橋字典the prime meridian柯林斯字典