balloonn.气球；球状物vt.使膨胀vi.乘气球飞行；激增；如气球般膨胀adj.气球状的balloon payment分期付款中的大额付款,飘浮式偿付款balloon sickness[医] 气球病, 高空病balloon dilation球囊扩张Balloon blasting气球爆破balloon collapse气圈崩溃balloon expander球囊扩张器balloon platform球载平台balloon mortgage飘浮式抵押balloon catheter气囊导管balloon maturity全部或大部分债券或欠款的到期日