Perhaps in this case, we could use a timestamp or just increment a counter for each runner, such as runner_1, runner_2, etc.
可能在本例中，我们可以使用一个时间戳或仅为每个参赛者增加一个计数器，比如runner_1、runner_2等。
New data types, such as NUMBER, VARCHAR2, and TIMESTAMP with a fractional seconds precision setting, are now supported.
现在支持具有精确到小数部分的秒设置的新数据类型，如NUMBER、VARCHAR2和TIMESTAMP。
Options: a few options for customizing the particular post being written, including editing its timestamp, and a few tracking features for websites such as Technorati or delicio.us.
选项：有一些自定义博文的选项，包括修改时间戳和一些用于Technorati或者delicio . us这些网站的跟踪功能。
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