the quality of being grey in colour

He could just make out the greyness of the roof between the trees. 他只能分辨出树与树之间屋顶的灰色。

She has a greyness under her eyes and a slouch from spending most of the day in front of a computer. 她眼睛下面有一抹灰暗和疲惫，因为一天的大部分时间都坐在电脑前。

(of someone's hair) the quality of being grey or white, usually because of age

She dyes her hair to hide the greyness. 她染发是为了遮盖灰白的头发。

Greyness of hair is one of the first signs of ageing. 头发灰白是衰老的最初迹象之一。

the state of the weather when there are a lot of clouds and little light

All she remembered about arriving in England was the rain and greyness. 在她的记忆中，到达英国的时候只有雨和灰蒙蒙的一片。

Perhaps it was the greyness of the weather that made her choose such brightly coloured clothes. 也许正是这种灰暗的天气使她选择了这种颜色鲜艳的衣服。