noun🔗Share彗发，彗云。 A cloud of dust surrounding the nucleus of a comet."As the comet neared the sun, its comae, a fuzzy cloud of dust and gas, became increasingly visible through telescopes. "随着彗星逐渐靠近太阳，它的彗发（彗云），也就是那团由尘埃和气体组成的模糊云雾，通过望远镜变得越来越清晰可见。astronomyspacesciencephysicsnatureChat with AIVocabulary GamePractice Reading
noun🔗Share彗差，慧形象差。 A defect characterized by diffuse, pear-shaped images that in an ideal image would appear as points."The cheap telescope produced images with noticeable comae, causing the stars near the edge of the field of view to appear as blurry, comet-like streaks instead of sharp points. "那台廉价望远镜成像有明显的彗差，导致视野边缘的星星看起来像是模糊的彗星状条纹，而不是清晰的点。medicinephysicstechnicalChat with AIVocabulary GamePractice Reading
noun🔗Share毛簇，缨，冠毛 A tuft or bunch, such as the assemblage of branches forming the head of a tree, a cluster of bracts when empty and terminating the inflorescence of a plant, or a tuft of long hairs on certain seeds."The dried comae atop the pineapple plant indicated that the fruit was nearing ripeness. "菠萝顶端那些干燥的冠毛表明果实快要成熟了。natureplantbiologypartChat with AIVocabulary GamePractice Reading
