pure repeating decimal

例句：

1. 1. The temperature in the room is exactly 23 degrees Celsius, which is a pure repeating decimal.
   房间里的温度正好是23摄氏度，这是一个纯循环小数。
2. 2. In mathematics, a pure repeating decimal is a number that has exactly one repeatingdigit.
   在数学中，纯循环小数是一个数字恰好有一个重复的数字。
3. 3. The decimal 0.5555... is a pure repeating decimal, and it can be represented as 0.5555...
   0.5555...是一个纯循环小数，可以表示为0.5555...