0 of the colour that is a mixture of black and white, the colour of rain clouds -- 灰色的,灰白色的
2 the colour that is a mixture of black and white, the colour of rain clouds -- 灰色,灰白色
She was dressed in grey. 她穿著灰色的衣服。
3 If a person or their hair greys, their hair becomes grey or white, usually because of age. -- (通常因年老而)頭髮變得灰白
I'm greying at the sides. 我兩鬢變灰白了。
4 If a group of people is greying, it contains an increasing number of older people. -- 特定人群中年紀較大的人數增加,老齡化