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 (英国的紧急求救电话号码)。同根派生 999相关词英汉例句a hoax 999 call 打999报假案或搞恶作剧There's been an accident - dial 999 and ask for an ambulance. 发生事故了, 快拨999叫救护车。999更多例句英英字典剑桥英英字典 the phone number used in the UK to call the emergency services999剑桥字典999柯林斯字典