Stepped aging
[化] 阶段时效
🧩 词语组成解析
v. 踏；行走（step的过去式和过去分词）
aging
['eidʒiŋ]
n. 老化;老龄化;（酒等的）陈化;熟化;
v. 使变老;（使）长大( age的现在分词 );使显老;使变老;使苍老;
🗣️ 情景例句
Ping-Pong tables, soda machines, and lots of music.
乒乓球， 汽水贩卖机， 热闹的音乐。
Would you please pass me the sugar?
可以请你把糖递过来吗？
and the profits from the exhibition were used to build museums and colleges.
博览会的赢利用来建造博物馆和高等学校。