吃透英语课本，提升在校竞争力
n. 圆周率
This fine tirade sounded, however, to the ungodly sailor-boy like a mere Pippi-pi.
然而，对这只不听话的小云雀来说，这番长篇大论听起来就是“叽叽喳喳”。
The value of pi is 3.14159.
圆周率的值是3.14159。
The value of pi is approximately 3.14159.
圆周率的值大约是3.14159。
