Ostrom
abbr. Office of Overseas Scientific and Technical Research 海外科学技术研究处
🗣️ 情景例句
I was a member of the debate team.
我是辩论队的成员。
Don't tell anyone!
不要告诉别人喔！
Long ago, people believed that the world was flat.
很久以前人们相信地球是平的。