| 单词 | rainbow |
| 释义 | rainbow n. & adj. --n 1. an arch of colours (conventionally red, orange, yellow, green, blue, indigo, violet) formed in the sky (or across a cataract etc.) opposite the sun by reflection, twofold refraction, and dispersion of the sun's rays in falling rain or in spray or mist. 2. a similar effect formed by the moon's rays. --adj many-coloured. Phrases and idioms rainbow lorikeet a small brightly coloured Polynesian parrot, Trichoglossus haematodus. rainbow trout a large trout, Salmo gairdneri, orig. of the Pacific coast of N. America. secondary rainbow an additional arch with the colours in reverse order formed inside or outside a rainbow by twofold reflection and twofold refraction. Etymology: OE regnboga (as RAIN, BOW(1)) |
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