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单词
pulley
释义
pulley
pul
ley
/
ˈpʊli
/
noun
(
plural
pulleys
)
[countable]
Etymology
ETYMOLOGY
pulley
Origin:
1300-1400
Old French
poulie
, probably from
Greek
polos
; ➔
POLE
1
science
a piece of equipment consisting of a wheel over which a rope or chain is pulled to lift heavy things
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更新时间:2025/6/4 20:46:54