Antipellagra vitamin
[化] 抗糙皮病维生素; 维生素PP
🧩 词语组成解析
🗣️ 情景例句
Mr. Park is a devoted husband.
帕克先生是个忠实情深的丈夫。
He is a wise man who speaks little.
聪明的人话不多。
but ever since he moved in, he has had trouble with cars and their owners.
但自从搬进去后，就和汽车及车主们发生了磨擦。