Ostrom
abbr. Office of Overseas Scientific and Technical Research 海外科学技术研究处
🗣️ 情景例句
Are you Mr. Chen?
你是陈先生吗？
Constant dropping wears away a stone.
滴水穿石。
Had he worked harder, he would have gotten though the exams.
如果他努力了的话，他就会通过考试的。