这些技术工人负责维护工厂的精密设备。

The skilled ___operatives are responsible for maintaining the factory's precision equipment.

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.