noun🔗ShareΦ，希腊字母。 Φ, the 21st letter of the Euclidean and modern Greek alphabet, usually romanized as "ph"."In Greek class, we learned that phi looks like a circle with a vertical line through it. "在希腊语课上，我们学到字母 phi (Φ) 看起来像一个中间有一条竖线的圆圈。languagewordsignChat with AIVocabulary GamePractice Reading
noun🔗Share黄金分割率，黄金比。 The golden ratio."Many artists believe that shapes with proportions close to phi are the most visually pleasing. "许多艺术家认为，比例接近黄金分割率的形状在视觉上最令人愉悦。mathnumberphilosophyartChat with AIVocabulary GamePractice Reading
noun🔗Share似动现象, 飞现象 A visual illusion whereby a sequential pattern of lights produces a false sense of motion."The old movie theater's marquee used a series of flashing bulbs to create a phi, making it look like the lights were chasing each other around the sign. "这家老电影院的招牌使用了一系列闪烁的灯泡来制造飞现象，看起来就像灯光在招牌上互相追逐。phenomenasensationphysicsmindtechnologyscienceChat with AIVocabulary GamePractice Reading
