Piing
abbr. 产品改进（Product Improve）
🗣️ 情景例句
Oh, what are you doing tomorrow?
噢， 明天你打算做什么？
My Biochem lectures are in the morning, and the labs are in the afternoon.
生物化学的课安排在上午，实验在下午。
Was all the material in that case destroyed?
箱里的东西都毁了吗？