road widener

例句：

1. 1. The road wideners were busy clearing the snow from the roads.
   道路拓宽者正在忙着清理道路上的积雪。
2. 2. The road wideners are responsible for maintaining the safety of the roads.
   道路拓宽者负责维护道路的安全。
3. 3. The road wideners have been working tirelessly to improve the quality of the roads in the area.
   道路拓宽者一直在努力工作，以提高该地区道路的质量。