Antipellagra vitamin
[化] 抗糙皮病维生素; 维生素PP
🧩 词语组成解析
🗣️ 情景例句
Oh, it's not finished yet,
噢！它尚未完成。
Believe not all that you see nor half what you hear.
眼见的不能全信，耳闻的也不能半信。
Did you find your ticket, sir?
你找到你的票了吗，先生？