Optg
abbr. operating 操作的，运转的，营业上的
🗣️ 情景例句
Fine.
很好。
Music can enrich your whole life.
音乐可以使你一辈子的生活丰富多彩。
Both the police and the workmen were grateful to the student for this piece of advance information.
警察与工人都对那个学生事先通报情况表示感谢。