| 词汇 | pi |
| 释义 | pi noun uk/paɪ/ us/paɪ/ (symbol Π, π) [ U ] mathematics, science 圆周率 the number (approximately 3.14) used to calculate the size of circles [ C or U ] language （希腊语字母表的第16个字母） the 16th letter of the Greek alphabet |
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