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单词
conundrum
释义
conundrum
n.
  
1.
a riddle, esp. one with a pun in its answer.
  
2.
a hard or puzzling question.
Etymology
: 16th c.: orig. unkn.
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planar
planarian
planchet
planchette
Planck's constant
plane
planet
planetarium
planetary
planetesimal
planetoid n. = ASTEROID.
planimeter
planish
planisphere
plank
planking
plankton
planner
plano-
planoconcave
planoconvex
planographic
planometer
plant
Plantagenet
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更新时间:2025/3/10 18:35:37