block and tackle
常见例句
- I finally hoisted him up with a block and tackle.
我最终用滑轮组把他吊了上去。 - The drilling line is reeled over the crown block and traveling block to gain mechanical advantage in a "block and tackle" or "pulley" fashion.
钻井用钢丝绳通过天车和游动滑车以滑轮组的形式获得机械上效益。
www.infopetro.com.cn - The problem about mechanical efficiency of tackle-block is the key point in junior high school mechanics and also the difficult point.
滑轮组机械效率问题是初中力学中的重点,也是初中力学解题的难点。 - If an advertiser chooses to merely block and tackle, lacking human relevance, his message will die a quick death.
FORBES: gyroVoice: Less Fartsy, More Artsy: The Evolution of Advertising Into an Art Form 返回 block and tackle