floating data的用法和樣例：
例句
- The nullability property of arithmetic operators over floating point data type is always nullable.
對浮點數據類型執行運算的算術運算符的為空性屬性始終可為空。 - Unless your target platform includes a floating-point coprocessor, you'll pay a very large penalty for manipulating float data in your program.
除非你的目標平台上有浮點運算協處理器，否則你的程序會在處理浮點數據上花費大量開銷。
