lightfast什么意思

lightfast的音标：lightfast的英式发音音标为：['laɪtfɑ:st]lightfast的美式发音音标为：['laɪtfæst]...

Permanent inks : Inks which do not fade. Also called Lightfast inks.耐久墨: 不会褪色的油墨. 亦称耐光油墨.Lightfast ink: Ink that will fade less than normal ink on prolonged exposure to strong light.耐光油墨: 在强光照射下,颜色较普通油墨耐久,变淡的程度较低的油墨....