B synnematin
[医] 共霉素B, 头孢菌素N, 青霉素N
🧩 词语组成解析
共霉素
🗣️ 情景例句
Susan and Harry have a sitter for Michelle in the city,
Susan和Harry在城里给Michelle找到一位临时保姆，
Please try to focus your attention on the speaker.
请试着把注意力集中于演讲的人。
Fine, thanks, Dad. What about you?
很好，谢谢爸爸。你呢？