| 单词 | pi |
| 释义 | pi/paɪ ||; paɪ/noun [sing] the symbol π used to show the relation between the circumference of a circle (= the distance around it) and its diameter(= the distance across it) that is about 3.14159 圆周率(π)（圆周与直径之比，即3.14159） |
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