Acog
abbr. 美国妇产科学会（American College of Obstetricians and Gynecologists）
🗣️ 情景例句
Every cloud has a silver lining.
再黑暗的地方也有一线光明。
Gold will not buy anything.
黄金不能买尽一切。
Twenty year!That's long time.
20年！这个时间可不短。