Optg
abbr. operating 操作的，运转的，营业上的
🗣️ 情景例句
Dad often works late,
爸爸老是工作到很晚，
I wrote music scores last night.
我昨晚在写歌谱。
It cuts a clean cylinder of rock,
这种钻头能切割一段光滑的圆柱形岩石，