noun🔗ShareΠ，希腊字母pi The 16th letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek."In Greek class, we learned that "π" (pis) looks like the English letter 'p', but it makes a 'p' sound. "在希腊语课上，我们学到希腊字母"π" (pis) 看起来像英文字母'p'，但它发'p'的音。languagelinguisticsChat with AIVocabulary GamePractice Reading
noun🔗Share圆周率 An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its diameter; approximately 3.14159265358979323846264338327950; usually written π."My math teacher explained that calculating the circumference of a circle requires using pis (π) multiplied by the diameter. "我的数学老师解释说，计算圆的周长需要用圆周率（π）乘以直径。mathnumberChat with AIVocabulary GamePractice Reading
noun🔗Share乱铅字 Metal type that has been spilled, mixed together, or disordered."After the earthquake, the printing shop floor was covered in pis, making it impossible to print anything until it was all sorted. "地震过后，印刷车间的地上到处都是乱铅字，不把它们整理好就什么也印不了。materialtypeindustryChat with AIVocabulary GamePractice Reading
