n. 耸人听闻；色彩俗丽，艳丽
... 灰黑色 = cinereous 灰黄 = luridness 灰黄霉素 = griseofulvin ...
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But many of the durs have serious weaknesses, the worst being that the hardness often comes off as luridness.
NEWYORKER: Crime Pays