1.The water may be greyer than grey in one river, and blacker than black in another.
某条河水的颜色可能是死灰色，另外一条河水的颜色可能是漆黑色。
2.His eyes were deeper, his hair greyer, his face more lined, and his expression more worn.
他的眼睛陷得更深了，他的头发更加灰白了，他脸上的皱纹更多了，而他的表情也更加倦怠了。
3.Participants sat in a dimly lit room and watched a black and white chequered screen which became greyer in six distinct stages, reducing the contrast between each square.
受试者在暗房内观察带有不同颜色方格图样的屏幕，该屏幕在六个不同的颜色背景下逐渐变暗，变暗过程中颜色差异减小。
4.In the afternoon the snow was even greyer and fell in flocks and stuck to the window-panes and then slid down and new flocks appeared out of the twilight and replaced them.
下午，雪甚至更灰暗了，一坨一坨的掉下来粘在玻璃窗上，滑下去，然后新的一坨从暮色中出现，取而代之。
5.His hair distinctly greyer now, his spectacles on, he is buried behind a newspaper.
他的头发现在明显地变得更灰白了，他戴上眼镜，埋身于报纸后面。