busyadj.忙的;繁忙的;热闹的;(电话)占线的vt.使忙于
busy hour call忙时呼叫数
busy indicator示忙器
busy back tone忙回信号声
busy afternoon忙碌的下午
busy back jack忙音插孔
busy hour load忙时负荷
busy J-Horner占线测试塞孔, 忙音塞孔
busy tone trunk忙音中继线
busy hour usage忙时应用
busy background杂乱背景