您要找的是不是：
老化变硬；时效硬化
年龄软化
以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译
?时效软化
时效软化
水溶性有机硅柔软剂
"Young men typically are most at risk, if you try to break it down by age and sex, although there is a softening in the difference between young men and young women, " Mr Roger added.
BBC: Drink-driving: Cardiff, Swansea in top 10 problem areas
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。