Operatives
n. 工作人员( operative的复数形式 ); （尤指）体力劳动者; 密探; （尤指政府的）特工人员
🗣️ 情景例句
Please don't do it without asking.
未经允许请不要那么做。
Thank you but this is something I have to solve by myself.
但有些事情我必须自己解决。
The further off this solid obstruction, the longer time will elapse for the return of the echo.
固体障碍物越远。回声返回所用时间就越长。