the circumference of the earth地球的周长It's a mile round the circumference of the field.运动场周长一英里.The diameter and the circumference of a circle correlate.圆的直径与圆周有相互关系....
邮票是晦暗的深蓝色。The stamp was a dull blue colour.天气极其恶劣。寒风凛冽,天色晦暗,能见度极低。The weather was at its worst; bitterly cold, with leaden skies that gave minimum visibility.目前的时代,真理是那样晦暗不明, 谎言又是那样根深蒂固.Truth is so obscure in these times...