aging
['eidʒiŋ]
n.老化(时效, 迟滞)
例句与用法：
An aging Romeo stepped out of the car, grey, pale and gone to seed.
一位年长的罗密欧步出车来，头发花白，面色苍苍，毫无魅力。
Goods now on sale; the now aging dictator.
现售货物; 现在正在衰老下去的独裁者
She's aging gracefully.
她老得有风韵。
The drainage system has been aged.
排水系统已经老化了。
详细释义：
n.
1. 变老, 老化
2. (酒等的)陈化, 熟化