Opri
abbr. operational primitives 操作原语
🗣️ 情景例句
If you watch carefully you will see how to do it.
你若细心观察，就会知道怎么做这件事。
I'm going skating in the Alps next month.
下个月我去阿尔卑斯山滑雪。
I'll be there next Monday at noon.
下个星期一中午吧。