O. b.
[医] 产科学
🧩 词语组成解析
[医] O型, 菌体型, 不动型(细菌)
🗣️ 情景例句
How old are you, Albert?
几岁啦， Albert？
When would you like to return?
你打算什么时候回来？
All the biscuits that were sent were carefully weighed.
凡送来的饼干都仔细地称量。