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sympathetic ink 【化學】(起初無色后來經過某種作用才現色的)隱顯墨水。

sympathetic nerve

I grasped it in my hand , put out the flame as quickly as i could , lighted my taper in the fire itself , and opened the crumpled paper with inexpressible emotion , recognizing , when i had done so , that these characters had been traced in mysterious and sympathetic ink , only appearing when exposed to the fire ; nearly one - third of the paper had been consumed by the flame 我嚇了一跳。趕急把那張紙抓在手里,撲滅了火,直接點燃了那支小蠟燭,然后帶著難以表達的激動心情攤開了那張扭皺了的紙。我發覺那上面的字是用神秘的隱顯墨水寫的,只有拿到火上去烘才會顯現出來。