Otc
abbr. 技术合作处（Office of Technical Cooperation）
🗣️ 情景例句
What are you up to?
你呢？你怎样？
The more we study, the more we discover our ignorance.
学得越多，就越发觉自己无知。
He's not in his office at the moment.
他现在不在办公室里，