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单词
mainspring
释义
mainspring
n.
  
1.
the principal spring of a mechanical watch, clock, etc.
  
2.
a chief motive power; an incentive.
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puffin
puffy
pug
puggaree
pugilist
pugnacious
puisne
puissance
puissant
puja
puke
pukeko
pukka
pulchritude
pule
Pulitzer prize
pull
pullet
pulley
Pullman
pullover
pullulate
pulmonary
pulmonic
pulp
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更新时间:2025/11/21 17:56:18