librettos
plural of libretto
(physics, chemistry) The property of certain photochromic materials of colouring in near-ultraviolet light and then fading in its absence; they are used in the lenses of sunglasses
plural of buck-and-wing
A person to whom something is sent
彼女は19世紀の歌劇の台本の希少本を棚に保管している。
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DiQt
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