音標發(fā)音英式音標 [?k?sten.??n ?li?d]美式音標 [?k?sten.??n ?li?d]英式發(fā)音 美式發(fā)音 基本解釋延長線路，延長線；電線延長部分。同根派生 extension lead相關詞英英字典劍橋英英字典 an extra wire used to take electricity to a piece of electrical equipment when it is an extra distance from the nearest socketextension lead劍橋字典extension lead柯林斯字典