Fluorescer
荧光剂; 荧光增白剂
🗣️ 情景例句
Excuse me, Susan.
对不起 ，Susan。
Yes, I guess that would be all right.
行，我想没问题。
Football is a very popular game in China. Many young people like it.
足球在中国是一项很受欢迎的运动。许多年轻人喜欢足球。