anti-skid-type tunnel without cover

例句：

1. 1. The new anti-skid-type tunnel without cover has significantlyimproved the safety of pedestrians crossing theroad.
   新设计的无覆盖防滑隧道极大地提高了行人过马路的安全性。
2. 2. The constructionof this tunnel without coveris expected to reduce traffic congestion in the area.
   预计这种无覆盖隧道的建设将减少该地区的交通拥堵。
3. 3. The tunnel without cover provides a safeand convenient way for people to travel throughthe busy city center.
   这个无覆盖隧道为人们提供了一种安全方便的城市中心通行方式。