Acetylidene
异乙炔
🗣️ 情景例句
She's come up with a new idea for increasing sales.
她想出了增加销售量的主意。
Who is she?
她是谁？
since her parents had impressed upon her that it would be unforgivable to miss it and cause the friends with whom she was going to stay to make two journeys to meet her.
因为她的父母再三跟她说，如果误了这趟车，她的东道主朋友就得接她两趟，这是不应该的。