Otc
abbr. 技术合作处（Office of Technical Cooperation）
🗣️ 情景例句
Not too bad, thank you.
挺好的，谢谢你。
He might not be here.
他可能不在这儿。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，