The ratio of the circumference of any circle to its diameter is less than 3 1/7 but greater than 3 10/71.
任何圓的周長與其直徑的比率小于3 1/7但大于3 10/71。
生命中最美好的不是事物，而是那些瞬間。
Life is like a cup of tea, it won't be bitter forever, but it will be bitter for a while.