音标发音英式音标 [ˌnaɪn.naɪnˈnaɪn]美式音标 [ˌnaɪn.naɪnˈnaɪn]英式发音 美式发音 基本解释999 (英國的緊急求救電話號碼)。同根派生 999相关词英汉例句a hoax 999 call 打999報假案或搞惡作劇There's been an accident - dial 999 and ask for an ambulance. 發生事故了, 快撥999叫救護車。999更多例句英英字典劍橋英英字典 the phone number used in the UK to call the emergency services999剑桥字典999柯林斯字典