brightener

例句：

1. 3. 给……增光；使……发亮同义词：luminizer, illuminator, brightener例句：1. The new paintjob will definitely brighten up this room.
   新的油漆工作肯定会让这个房间焕然一新。
2. 2. The brightener in the solution isessential for the reaction to occur.
   溶液中的增光剂对于反应的发生至关重要。
3. 3. The teacherused a brightener to highlight important pointsduring the presentation.
   老师在演讲中用了一个增光剂来强调重点内容。