Character
| HSK | Not in HSK |
|---|
Π pài
DEFINITIONS
WORDS
| Π日 pài rì | World Pi Day, a celebration of the mathematical constant π on March 14 each year |
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| HSK | Not in HSK |
|---|
| Π日 pài rì | World Pi Day, a celebration of the mathematical constant π on March 14 each year |