abbreviatedadj. 简短的,仅可蔽体的,小型的 v. 使简短( abbreviate的过去式和过去分词 ),缩简,缩略,使用缩写词
abcabbr. alphabet 字母表,automatic bass compensation 自动低音补偿,automatic brightness control 自动亮度控制,alarms by carrier (panic-button device alerting fire and police stations) 移动警报器(火警和警察局的紧急按钮设备)