在代码中，变量名以ci开头表示它是常量。

In the code, variable names starting with ___ci indicate they are constants.

这个置信区间显示治疗效果在5%到15%之间。

The ___CI indicates the treatment effect ranges between 5% and 15%.

他在情报部门负责反间谍工作。

He worked in the ___CI unit to prevent enemy espionage.