Nicotinamide
n. 烟酰胺\\n[化] 烟酰胺; 尼克酰胺; 抗糙皮病维生素; 维生素PP
🗣️ 情景例句
What's the exchange rate today?
今天的兑换比率是多少？
How much is a one-way ticket?
单程车票多少钱一张？
Bad luck! said Mother. It doesn't matter!
“真糟糕！”妈妈说，“没关系！”