He was elegantly dressed in a grey suit, blue shirt, and paisley tie.
他优雅地穿着一件灰色西服，蓝衬衣，系着佩斯利涡旋花纹领带。
《柯林斯英汉双解大词典》
2
There was a small patch of blue in the grey clouds.
乌云中透着一小块蓝天。
《柯林斯英汉双解大词典》
3
Osmium (Os) : The densest of natural elements-twice as dense as lead-this blue-grey metal finds a home in applications where hardness and durability are essential.