音标发音英式音标 [ˈmʌs.ənt]美式音标 [ˈmʌs.ənt]英式发音 美式发音 基本解释(must not的縮略形式)。同根派生 mustn't相关词英汉例句You mustn't worry too much about this. 你不必對此太擔心。mustn't更多例句英英字典劍橋英英字典 short form of must notmustn't剑桥字典mustn't柯林斯字典