音标发音英式音标 [ˈmɪʃ.ən ˌkriːp]美式音标 [ˈmɪʃ.ən ˌkriːp]英式发音 美式发音 基本解释（尤指军事行动中的）使命偏离，任务蠕升。同根派生 英英字典剑桥英英字典 the fact of doing a much larger job for a longer time than was originally expected, especially in a military operation