Pi
n. 圓周率\\n[計(jì)] 處理器接口, 程序中斷
?? 牛津釋義
pi
n
1 the sixteenth letter of the Greek alphabet (, ), represented in English spelling by `p' 希臘字母表的第十六個(gè)字母（）, 英語拼寫中用 p.
2 (geometry 幾) symbol () representing the ratio of the circumference of a circle to its diameter (ie 3.14159) 圓周率（即3.14159）.
??? 情景例句
Excuse me, ma'am.
對不起 夫人
When do you leave?
你何時(shí)起程？
Among these I would list string and brown paper, kept by thrifty people when a parcel has been opened, to save buying these two requisites.
這些東西中我想舉出線繩和包裝紙為例。節(jié)儉的人們打開包裹后便把這兩樣必備的東西收藏起來。省得日后去買。