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单词	block and tackle
释义	block and tackle noun A lifting mechanism consisting of ropes, a pulley block, and a hook.We have bent a number of bows using a steam box and a jig with a block and tackle and pulleys to bend them around a form.... There was clearly no time to rig a block and tackle to winch the casualty on board. A block and tackle can contain as many pulleys as you like, although at some point the amount of friction in the pulley shafts begins to become a significant source of resistance.
随便看	fertility drug fertility treatment fertilizable fertilization fertilize fertilizer Fertö Tó ferula ferule fervency fervent fervently fervid fervidly fervor fervour Fescennine fescue fess fesse Fessenden, Reginald Aubrey fess point fest -fest festa

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。