block and tackle

美 
英 
  • n.滑轮组;滑车组
  • 网络滑轮和滑车组;滑车设备;滑轮和复滑轮组
复数:blocks and tackles  
block and tackle
n.
1.
滑轮组;滑车组a piece of equipment for lifting heavy objects, which works by a system of ropes and pulleys (= small wheels around which the ropes are stretched)