1·Code Sample 9: Test for real number precision.
代码示例9：对实数精度的测试。
2·The second argument strictly matches a non-alphanumeric string followed by a space followed by an integer followed by another space and finally a real number.
第二个参数严格匹配一个非字母和数字组成的字符串，该字符串后面依次为空格、整数、另一个空格，最后是一个实数。
3·So the task duration is not a single real number, rather it is a random variable that describes the likelihood of completion within a certain range of time.
所以任务持续时间不是一个单一的实数，而是描述一定时间范围内完成的可能性的随机变量。
4·The difference lies in the fact that floating-point data types used in computers can't hold every real number.
区别在于一个事实：计算机中使用的浮点数据类型无法包含每个实数。
5·Every real number between 0 and 1 is supposed to appear somewhere, at some finite place on the roster.
0到1之间的每个实数都会出现于名册中无限远的某处。