booms/buːm/名词低沉有回响的声音；隆隆声（经济上的）繁荣；迅速发展the property boom房地产业的繁荣帆桁；张帆杆/buːm/动词发出低沉有力的声音；发出隆隆声，轰鸣The cannons boomed (out) in the night.晚上传来隆隆炮声。增长；迅速发展The leisure industry is booming.休闲产业正在蓬勃发展。想跟读，去练习
