lag gravel

英 美
  • 残留砾石
  • gravel n.碎石v.铺碎石;使困惑
  • lag v.落后;减退;缓慢进行n.落后;时间间隔
    1. The road is covered with gravel.
      这路用砾石铺成。
    2. Gravel is much used for road-making.
      砾石常用来筑路。