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
He studied harder to improve his English.
他更加努力提高英语水平。
I often go to school in the morning.
我常常在早上去学校。
Would you like me to demonstrate it for you?
要不要我来为你示范一下？