交通,运输,货流
noun
the vehicles that are on a road at a particular time 路上行驶的车辆；交通 uncountable
the movement of ships,trains,aircraft,etc.along a particular route （沿固定路线的）航行,行驶,飞行 uncountable
the movement of people or goods from one place to another 运输；人流；货流 uncountable
illegal trade in something （非法的）交易,买卖 (in sth) uncountable
