Acog
abbr. 美国妇产科学会（American College of Obstetricians and Gynecologists）
🗣️ 情景例句
The performance of the stock market can reflect economic conditions.
证券市场的表现能反应经济状况。
Old oxen have stiff horns.
牛老角硬。
That is not in the agreement.
借约上可没有这一条。