短语词组短语tributary unit 支路单元;附属单元tributary glacier 支冰川;冰川支流;冰川支流支冰川Tributary board 支路板Tributary Zone 支流地带tributary signals 支路信号tributary river 支流tributary inflow 支流流入水量tributary waters 支流水体tributary modem 从属调制解调器 返回 tributary