operative|operatives

在这个项目中，时间是最关键的因素。

Time is the ___operative factor in this project.

这些特工被派往敌对国家收集敏感信息。

The ___operatives were sent to the enemy country to gather sensitive information.

新系统将在下个月全面投入运行。

The new system will become fully ___operative next month.