- the fact of being full of light or of shining strongly光线充足的；明亮的
- She was momentarily blinded by the brightness of the room.她一时被房间的亮度蒙住了双眼。
- how bright something is
- to adjust the brightness (= for example, on a TV set)调节亮度
- As the brake is applied, the light increases in brightness.踩下制动器后，光线会增加亮度。
- the quality of being bright in colour
- Repeated use of some washing powders can lead to a loss of brightness in colours.重复使用某些洗衣粉会导致颜色失去亮度。
Topics Colours and Shapesb2 - a cheerful and lively attitude or way of behaving
- Her brightness and energy kept us all together.她的聪慧和活力使我们团结在一起。
- the quality of being intelligent and quick to learn聪明的；悟性强的
- The brightness of these students isn't in doubt.这些学生的聪明才智是毋庸置疑的。