音标发音英式音标 [ˈbɪv.i ˌsæk]美式音标 [ˈbɪv.i ˌsæk]英式发音 美式发音 基本解释（套在睡袋外麪以增加保護的）露宿袋，露營睡袋。同根派生 bivvy sack相关词英英字典劍橋英英字典 a thin, light cover that fits over a sleeping bag for extra protection, often used by climbersbivvy sack剑桥字典bivvy sack柯林斯字典