词根词缀：crepuscu-, crepusc-

【来源及含义】Latin: twilight, dusky, dawn; in the evening or early-morning hours; dim, indistinct

【同源单词】anticrepuscular arch, anticrepuscular ray, crepuscle, crepuscular, crepuscule, crepusculine

词根词缀：obscur-

【来源及含义】Latin: dark, dusky; indistinct, uncertain; unintelligible; vague; ambiguous

【同源单词】Brevis esse laboro, obscurant, obscurant, obscurantism, obscurantist, obscuration

词根词缀：phaeo-, pheo-

【来源及含义】Greek: dusky; literally, having the color of the twilight sky

【同源单词】pheochrome, pheochromoblast, pheochromocytoma, pheomelanin, pheomelanosome, pheophorbide