Fluorescer
荧光剂; 荧光增白剂
🗣️ 情景例句
You've got a point there.
你的话很有道理。
He's tired because he worked hard all day today.
他疲倦是因为他今天整天努力工作。
Who won the girls' 400 metres?
女子400米赛跑谁获胜？