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π日
Pài rì
  1. 1 World Pi Day, a celebration of the mathematical constant π on March 14 each year
派
pài
  1. 1 clique
  2. 2 school
  3. 3 group
  4. 4 faction
  5. 5 to dispatch
  6. 6 to send
  7. 7 to assign
  8. 8 to appoint
  9. 9 pi (Greek letter Ππ)
  10. 10 the circular ratio pi = 3.1415926
  11. 11 (loanword) pie
圆周率 | 圓周率
yuán zhōu lu:4
  1. 1 (math.) the ratio of the circumference of a circle to its diameter (π)