main airway

例句：

1. 1. The main airway through the city is the expressway.
   穿过城市的主干道是高速公路。
2. 2. Main airways are usually wider than secondary roads.
   主干道通常比次级道路宽。
3. 3.The construction of the new airport has disrupted the main airway to downtown.
   新机场的建设已经干扰了通往市中心的主干道。