Fluorescer
荧光剂; 荧光增白剂
🗣️ 情景例句
Yes. Have the people arrived?
是的。客人来了吗
Which American singer do you like to listen to?
你喜欢哪个美国歌星的歌曲？
The students followed Uncle Wang to see the other machine.
学生们跟着王大叔去看另一部机器。