Optical brightener
[化] 荧光增白剂
🧩 词语组成解析
增白剂, 抛光剂, 光亮剂
🗣️ 情景例句
whom I think you've met once or twice before.
我想你以前见过他一两次面。
The first wealth is health.
健康是最重要的财富。
Most of the earth's surface is covered by water.
大部分的地球表面被水覆盖着。