boomn.繁荣；兴旺；激增；低沉声n.帆杠；吊杆；支臂；尾桁；水栅vi.急速增长；发出低沉声vt.使兴旺；促进boom off以横杠推开船boomazey本马齐印花哔叽绒boom car噪音车boom cat悬臂起重架boom net栅栏网boom outv.发生低沉的声音boomlessadj.不繁荣的boom box转臂箱boominesn.箱谐振boom man吊杆操作员