rainbown. 彩虹a. 五彩繽紛的學術名詞虹:地球科學、氣象學、大氣科學彩虹:物理學、資訊連波:外國地名油膜彩虹:地質學英文釋義an arc of colored light in the sky caused by refraction of the sun's rays by rainan illusory hope