rate of surfaced roads

例句：

1. 1. The government is committed to improving thequality of life for its citizens.
   政府致力于提高公民的生活质量。
2. 2. The new road willsignificantly reduce the traffic congestion inthe area.
   这条新路将显著减少该地区的交通拥堵。
3. 3. The rate of surfaced roads has increased significantly in recent years.
   近年来，路面覆盖率有显著增加。