Flavin
n. 黄素\\n[化] 黄素类; 异咯嗪; 五羟黄酮; 栎精
🗣️ 情景例句
The truth is ... yes.
老实说……是很难。
While you were writing letters,I was reading a book.
当你正在写信时，我正在读一本书。
We talked and wondered about the people who had lived here before.
我们谈论并且很好奇以前住在这里的人们。