Pici
abbr. positive ion electron impact 正离子电子碰撞
🗣️ 情景例句
May I see you in my office?
你可以到我的办公室来一下么？
Fine feathers make fine birds.
人要衣装，佛要金装。
There was also a great deal of machinery on display.
参展的还有很多机器，