The stamp was a dark, dull blue colour with a heavy black postmark.
这枚邮票是模糊的暗蓝色的,上面盖着一个粗黑色的邮戳。
《柯林斯英汉双解大词典》
2
He was weird-looking. His hair was badly cut and his clothes were ancient and dull; too-short corduroys, baggy at the knees and colour-less sweaters, dotted with fluff.