Obs

📖 中文释义

  1. [电] 气象电报

🧩 词形变化

原形 ob变形 s3
📘 English Definition（英文释义）
  1. n a major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea
  2. n the branch of medicine dealing with childbirth and care of the mother