block and tackle

音標(biāo)發(fā)音

I finally hoisted him up with a block and tackle.
我最終用滑輪組把他吊了上去。
The drilling line is reeled over the crown block and traveling block to gain mechanical advantage in a "block and tackle" or "pulley" fashion.
鑽井用鋼絲繩通過(guò)天車和遊動(dòng)滑車以滑輪組的形式獲得機(jī)械上傚益。
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The problem about mechanical efficiency of tackle-block is the key point in junior high school mechanics and also the difficult point.
滑輪組機(jī)械傚率問(wèn)題是初中力學(xué)中的重點(diǎn)，也是初中力學(xué)解題的難點(diǎn)。

If an advertiser chooses to merely block and tackle, lacking human relevance, his message will die a quick death.
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a device for raising objects off the ground, consisting of one or more small wheels with a rope or chain going around them, connected to a high part of a building

a hoisting device in which a rope or chain is passed around a pair of blocks containing one or more pulleys. The upper block is secured overhead and the lower block supports the load, the effort being applied to the free end of the rope or chain