这条高架公路穿过城市中心，缓解了地面交通压力。

The ___skyway runs through the city center, easing ground traffic congestion.

空中走廊连接了医院的两栋大楼，方便病人在雨天通行。

The ___skyway connects the two hospital buildings, making it convenient for patients to walk between them on rainy days.

飞机必须严格按照指定的空中航线飞行。

Aircraft must follow the designated ___skyway precisely.