Brightener
增白剂, 抛光剂, 光亮剂
🗣️ 情景例句
You may accept this draft by signing.
请你们签字"承兑。
In college I majored in economics, What was you major?
大学时我主修经济，你主修什么呢？
My name is Wu Jun. This is our first lesson, so I don't know all your names.
我叫吴军。这是我们第一次上课，所以我认不全你们的名字。