v.（动词）boomed， boom.ing， boomsv.intr.（不及物动词）To make a deep, resonant sound.发出隆隆声：发出低沉而有回响的声音To grow or develop rapidly; flourish:快速发展：迅速成长或发展：暴涨：Business is booming.生意兴旺v.tr.（及物动词）To utter or give forth with a deep, resonant sound:以低沉而有回响的声音发出：a field commander booming out orders.战地指挥官以低沉而有回响的声音发出号令To cause to grow or flourish; boost.使繁荣：引起成长或暴涨；使迅速发展n.（名词）A deep resonant sound, as of an explosion.隆隆声：低沉而有回响的声音，比如爆炸声A time of economic prosperity.繁荣：一段时间的经济繁荣A sudden increase, as in popularity.激增：突然的增长，如人口激增
半夜磨牙
