ageing mud困泥ageingn.老化动词age的现在分词形式.=aging（美）.Ageing Social Security System养老社会保障体系ageing of insulating material绝缘材料老化ageing with pre-deformation形变时效Ageing Mona Lisa worries Louvre《蒙娜丽莎》日显苍老 "整容手术"迫在眉睫Ageing memory retention disorder增龄性记忆障碍ageing characteristics of mucilages胶浆的老化性能（美国印花技术用语）ageing characteristics of thermistor热敏电阻衰老特性Ageing of the population continued.人口持续老化。