Vfa
[医][=volatile fatty acid]挥发性脂肪酸
🗣️ 情景例句
Hi, Betty. I'll be at five five five...seventeen twenty.
好 Betty 我的号码是555-1720。
He who purposes to be an author, should first be a student.
想当作家，相当学生。
I'm very sorry, sir.You must get off the bus.None of our passengers can change this note.
非常抱歉，先生。您必须下车。我们的乘客中没人能换开这张钞票。