on duty

on duty  {adj. phr.}
Doing one's job; supervising.
Two soldiers are on duty guarding the gates.
There is always one teacher on duty during study hour.
Contrast: OFF DUTY.
Categories: adjective study

An client error occurred: Error calling GET https://www.googleapis.com/youtube/v3/search?part=id%2Csnippet&q=%22on+duty%22&maxResults=4&videoEmbeddable=true&videoSyndicated=true&safeSearch=strict&type=video&key=AIzaSyCfLRuAZZNAQm6a5uDzgY-Tt668bxsppCs: (403) The request cannot be completed because you have exceeded your <a href="/youtube/v3/getting-started#quota">quota</a>.