nonpassage of signal

例句：

1. 1. The new road has made travel betweenthe two cities nonpassage.
   这条新路使得两座城市之间的旅行变得无障碍。
2. 2. The team's success was largelydue to their nonpassage communication.
   团队的成功在很大程度上归功于他们的无障碍沟通。
3. 3. Theinvention of the wheel greatly facilitated transportation, making travel nonpassage.
   轮子的发明极大地便利了交通，使旅行变得无障碍。