block and tackle

noun

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)

1. I finally hoisted him up with a block and tackle.
   我最终用滑轮组把他拉了上去。
2. A Block and tackle can be used to lift heavy weights or to exert large forces in any direction.
   这种滑车组可用来提升重物或沿任意方向施加大力。
3. A pulley or a system of pulleys set in a casing. A block and tackle is needed to lift that heavy machine.
   要吊起那么重的机器需要使用一个滑轮组。
4. Rig derrick is one of the most important equipment in hoist system. People can install crown block and hang tackle, hoisting hook and special tools on it.
   石油井架是钻机起升设备的重要组成部分之一，起着安放天车，悬挂游车、大钩及专用工具的重要作用。

noun

1. pulley blocks with associated rope or cable